Above the Influence: After a night of drinking, the protagonist resists giving in to the mutual attraction between him and Fluttershy, knowing that it would only lead to meaningless drunken sex. It's also the closest they ever get.
Actually Pretty Funny: Several of the minor pranks the protagonist plays on Rarity. She initially reacts in a deadpan manner, before breaking down and admitting it was actually pretty funny.
Cashmere fell in love with Rarity but tried to move quicker than Rarity was comfortable with, leading to being turned down and having her heart broken.
There are several hints that Fluttershy does not share the same level of affection that Rarity has for her.
Slate develops a one-sided attraction towards Rarity, after he mistakes her polite small-talk and banter as genuine interest.
After being involved with Rarity and the protagonist for some time, Fluttershy eventually admits to having fallen in love with him, which causes him a great deal of stress as he cannot return her feelings in the same way.
All Men Are Perverts: Certainly to be believed if you go by Pipe Wrench and the protagonist, something both Rarity and Dazzle Drop chastise them for throughout. Pipe even whistles at an attractive barmaid with his wife sitting right by him, much to her bemusement.
As You Know: A variation. Given that the audience is likely aware of the cast'sprevious adventures, the details are usually glossed over by the narrative whenever they're brought up, before cutting to the next scene.
Cashmere: You're capable of just as much spite as I am. The difference is, I don't hide it behind a veneer of civility if I don't have to.
Attention Deficit... Ooh, Shiny!: Ponies apparently tend to be quite prone to this, according to the protagonist who describes them as "easily amused". Ponyville seems to be particularly susceptible, if Cashmere's words are anything to go by.
Author Appeal: The author makes no secret that Rarity is his favourite pony, and this was one reason for writing the story. The other reason...
Author Tract: An unobtrusive example. One the author's reasons in writing the story was to show off Rarity's character strengths, something he views as being overlooked and marginalised within the show's fandom.
Rarity gets a very similar one later on when she reminds everyone she is not powerless in the face of danger.
Rarity: I have helped banish Nightmare Moon! I have faced dragons and changelings and the very embodiment of chaos itself! I am the bearer of an element of harmony! I am not a helpless damsel in distress!
In Chapter 2, Rarity and the protagonist run back home for brief tryst, only for the narrative to cut to the protagonist... bouncing a ball off the wall. Of course, the way this is described, you'd think it was initially referring to something completely different.
In a flashback within Chapter 7, after teleporting to Canterlot and throwing up in some bushes, Twilight displays touching concern for the protagonist by rushing to his side... to inspect the damage done to the plants.
Believing Their Own Lies: Rarity herself suggests she allowed this to happen regarding her relationship with Cashmere, in order to forget the mistakes she made in handling the situation.
Bitch in Sheep's Clothing: Cashmere. She'll hide her ruthlessness behind her outwardly friendly and sultry exterior, but when the chips are down she'll readily show her true colours. Subverted later on, when underneath her bitterness, she actually comes across as a fairly decent pony.
Bi the Way: Rarity and Cashmere both display this. Fluttershy also does to a lesser extent.
Breaking the Fourth Wall: Pinkie, who points how many bits Rarity lost in Chapter 7 by reading the figure from the previous chapter.
Brick Joke: After waking up in hospital and hearing the unusual 'codenames', the protagonist snidely comments upon hearing Twilight's name that she should have included "Sparkling" in there. A little later in the scene he discovers Twilight's actual full name.
Cashmere briefly adopts a "terrible" impression of AJ's southern accent when she recounts the time Applejack threatened her over her behaviour towards Rarity. She even gives herself a temporary ponytail to go along with it.
Rainbow Dash is quite the lightweight owing to her fast metabolism, but completely ignores Applejack's warnings over this and denies having such a problem.
Twilight also possesses an extremely low tolerance for alcohol and claims she gets drunk after two glasses of beer.
Rarity is also easily intoxicated. In fact it's probably safe to say almost all of the Mane 6 cannot hold their drink, save for AJ.
Applejack: Ah swear ta Celestia, am Ah the only one here who can hold her liquor?
Can't Spit It Out: Played slightly differently from normal in that here it's the fact that the protagonist cannot seem to spit it out that he doesn't love Fluttershy. When he finally sits down with Rarity and makes this perfectly clear, it does not get received well.
Cat Fight: A fairly regular occurrence between Rarity and Cashmere, particularly when they very nearly come to blows at a social function in Chapter 3.
Cat Scare: Played for laughs when Opal seemingly appears out of nowhere to scare the protagonist, after he tries to store some clothing in a dresser in Chapter 2. Justified, as Opal has a habit of sleeping in the drawers, which gets a Call Forward in Chapter 23.
Chekhov's Gun: Rarity's picture of herself and Cashmere, which is first brought up in Chapter 2 and goes unfired until Chapter 25, when Rarity uses her copy of the photo as a reminder to Cashmere of just how bitter she's become, prompting her Villainous Breakdown.
Chekhov's Skill: While Rarity initially learns to teleport for fairly mundane reasons, it later comes in handy when she uses it to save her boyfriend from being seriously injured by Slate.
Comically Missing the Point: Cashmere, when confronted with stalker photographs of Rarity and the protagonist immediately thinks they're gifting her with pornography, rather than accusing her of anything.
Continuity Nod: Rarity and the girls occasionally bring up events that happened in the show, which took place several years before the story starts.
Rainbow Dash seems to be highly interested in Rarity's sex life, with less emphasis on the "covert" part. Though admittedly she was drunk at the time...
Fluttershy plays this trope fairly straight later on in the story.
Cultured Warrior: Played with. Despite Rarity's claims over the protagonist's lack of culture, he is at least well-read enough to recognise Shakespeare note the line in question is from As You Like It, though originally a quotation from Christopher Marlow'sHero and Leander when it's quoted at him.
Curse Cut Short: Not with cursing, but characters have a habit of interrupting when anything particularly lewd is about to be mentioned. In several cases even the protagonist's internal monologue gets cut off.
Cut Lex Luthor a Check: Rarity encourages Cashmere to do this, suggesting that it's more efficient to compete legitimately by offering a good service, rather than engaging in underhanded deals. Interestingly though, both their methods are very successful, despite being completely different ethically.
Determinator: Slate. Despite having his leg broken and suffering from serious internal injuries, he still puts up a strong attempt to resist arrest. Even the protagonist grudgingly comments to himself on how impressive this is.
Disappointed In You: Rarity's reaction to the protagonist finally admitting he doesn't love Fluttershy in the same way. Somewhat unusually for this trope however, it's Rarity admitting just how much she hates the feeling of being disappointed rather than the recipient.
invokedDiscredited Meme: In-universe, mentioning sparkling whenever Twilight is brought up has apparently become this, after it "stopped being funny two years ago".
The Engineer: The protagonist, who was an engineer in the US Army - on loan to the US Navy for a secret project - before he wound up in Equestria.
Enormous Engagement Ring: By human standards many engagement 'rings' in Equestria are this, since necklaces or other items are often used instead. The magical necklace the protagonist has made for Rarity fulfills the spirit of the trope however by being particularly unusual and spectacular.
Evil Plan: Rarity and the protagonist start plotting one against Cashmere in Chapter 23. Subverted when Fluttershy suggests they talk to her, which they immediately decide to do instead, noting that it's a far better idea.
Exiled to the Couch: The protagonist exiles himself to it after a vicious argument in the first chapter. Rarity does move him back upstairs while he sleeps however, and they make up shortly thereafter.
Expy: Several famous people from Earth have almost identical counterparts in Equestria, Shakespeare being at least one. Naturally the protagonist lampshades this.
Eye Scream: An example occurs when the protagonist accidentally pokes his eye on Rarity's horn during an enthusiastic makeout session.
Cashmere for Rarity. Both are talented and successful, but where Rarity surrounds herself with those she loves and strives to be generous and ethical, Cashmere indulges in hedonistic behaviour as a distraction for what she lacks, and engages in ruthless business practices.
Pipe Wrench is also one for Cashmere. Whereas Pipe treats hisworkers well, Cashmere treats her employees as little more than tools to be discarded, and shows little concern for their well-being.
Freudian Couch: Cashmere mockingly asks if she should get one in response to Rarity's increasingly hard-hitting psychoanalysis in Chapter 25.
Fridge Logic: An in-universe example. When Cashmere tries to smear Rarity as having a "human fetish", Morning Blossom points that you can't really have a fetish when there's only one human in all of Equestria.
Furry Reminder: When going out on their first date, the protagonist gets Rarity some flowers... and is promptly surprised when she tastes one. The next time he slips a note in, reminding her not to eat them immediately.
Genre Savvy: The protagonist is well aware he is dating a heroine who will not stand idly by when someone puts themselves at risk.
Pipe Wrench and Dazzle Drop, even if she occasionally gets frustrated by his lack of refinement.
Rarity and the protagonist show many elements of this despite not being married, though he does plan to propose to her when other events aren't getting in the way.
The Hedonist: Cashmere turns into one. Rarity calls her out on this as being nothing more than a way to distract herself from the things she lacks.
Hello, Insert Name Here: The protagonist. As a result, the dialogue goes somewhat out the way to make sure he's never mentioned by name. Rarity's tendency to call others "darling" helps make this less obvious however. This article unfortunately does not have the same luxury.
Heroic BSOD: The protagonist's fairly understandable initial reaction when he finds out he's in a land of talking magical ponies.
Hero with Bad Publicity: Played with. While Cashmere and later Slate try to smear Rarity's name, it's not implied to have any real impact owing to Rarity already being well-liked and respected.
She Who Fights Monsters: Despite proclaiming to be above such things, Rarity does display this over the course of the story when she engages in some somewhat unethical behaviour of her own in retaliation, which she does admit to. However, there are some lines - such as resorting to slander - that she absolutely refuses to cross.
"Hey, You!" Haymaker: The protagonist gives one to Slate when the full extent of his stalking activities is revealed. It doesn't knock him out, but does hurt him pretty badly and kicks off their fight.
Hoist By Her Own Petard: At her store's opening ceremony, Cashmere makes use her supposed friendship and solidarity with Rarity to force Rarity into giving away a heavy discount, with no way to refuse while still saving face. Rarity turns this around later on by using Cashmere's same words to force her into going along with another sale.
Hot-Blooded: The protagonist, despite having legitimate reasons to be angry does have a bit of a temper. He gets called on this several times as it being scary, unproductive, or inappropriate to the situation.
Huge Guy, Tiny Girl: The protagonist and Rarity, where due to the species difference, he towers over her by a good foot-and-a-half. Similarly, between him and Fluttershy; she mentions that he's twice her size at several points.
Hypocrite: The protagonist when he asks Pipe Wrench why he would give someone like Slate a job. Pipe quite reasonably points out that his nature in giving chances other ponies would not is why the protagonist got a job working for him in the first place, which does get acknowledged.
Rarity at times fears that her high-maintenance nature and Large Ham tendencies can be offputting.
Rainbow Dash becomes somewhat melancholic and insecure after she's had too much to drink, though she passes it off as a result of the alcohol making her overly emotional.
In Medias Res: The story starts off with protagonist having already been in a relationship with Rarity for about a year, with flashbacks filling in the events that led up to that point over the course of several chapters.
In-Series Nickname: Cashmere tends to refer to Rarity and the protagonist as "Rares" and "boy-toy" respectively. They find this habit rather irritating, which knowing Cashmere is probably the entire point.
Interspecies Romance: The main premise of the story is set around Rarity and the protagonist being in a relationship. Fluttershy gets in on it later on... sort of...
Interrupted Intimacy: Morning Blossom accidentally ends up interrupting Rarity and the protagonist when she shows up to work an hour early, much to their frustration.
Intimate Healing: After being smacked in the head with an iron rebar in a construction accident, the protagonist gets some intimate healing courtesy of Rarity. It doesn't do much for the head wound, but it does work pretty well as a way of curing his headache.
Cashmere's unrequited love for Rarity and her resulting heartbreak plays a large part in her actions.
The fact that he doesn't love Fluttershy in the same way ends up causing the protagonist a great deal of anguish when he finally admits it to Rarity.
A Man Is Always Eager: The protagonist plays this one fairly straight, to the point where Rarity reacts with disbelief when at one point suggests it would be a bad idea. This is slightly subverted however by the fact it takes a great deal of time for them both to become comfortable with the idea of being intimate with each other in the flashbacks.
Mind Rape: Mentioned by name and an unfortunate necessity as part of Celestia and Luna's efforts to send the protagonist home, by allowing them to find the correct world. Celestia comments on how she detests such an invasive and painful procedure, and notes that thankfully she's only had to do it a small number of times.
Mondegreen: Rainbow Dash, when she refers to Cashmere's 'Elegant Expectations' shop firstly as "Elephant Excretions", and then "Exploding Eclairs" shortly afterwards.
Morality Pet: Rarity was one for Cashmere when they opened Carousel Boutique together, prior to their falling out, and reined in some of Cashmere's less ethical suggestions on how to run their business.
Pinkie Pie, naturally. Ditzy Doo also has a propensity to go off on long random tangents.
The protagonist as well when he gets nervous.
Mundane Luxury: Rarity is very enthusiastic about the various uses of fingers that we take for granted.
Mundane Utility: Rarity learns how to teleport for the sole purpose of getting upstairs to the bedroom more quickly. That and showing off a little, but this is Rarity.
Murder the Hypotenuse: It's left somewhat ambiguous if this was what Slate was aiming for, or if he was just taking advantage of an accident, but certainly most elements of this are shown when he refuses to help and instead rants at the protagonist for 'stealing' Rarity.
Naughty by Night: Despite being self-described and cultivating her image as a "proper lady", Rarity apparently has an adventurous spirit that can be quite surprising.
Nice Guy: The protagonist. Cashmere even calls him this directly when mentioning how he'd never do anything to hurt Rarity.
No Sense of Personal Space: Cashmere has a habit of getting very touchy-feely with others, particularly with Rarity. Rather hypocritically, she gets very annoyed if anyone dares to make the same impositions upon her.
Cashmere accuses Rarity of this when the latter strikes back with some schemes of her own. Rarity protests this assertion, though it's shown over the course of the story that she's not as different as she'd like to believe.
The protagonist when he inadvertently ends up making the same mistake Rarity made with Cashmere all those years ago, and winds up leading Fluttershy on rather than confessing his true feelings to her.
Parental Abandonment: The protagonist, who was raised by his mother. As a result, he's somewhat envious of the fact that both Rarity and Fluttershy had both their parents around when growing up.
Parental Substitute: Pipe Wrench takes on the role as a father figure to the protagonist, and gives him advice on how to deal with personal problems on several occasions. His wife Dazzle Drop similarly becomes something of a mother figure.
Parrot Exposition: Twilight in Chapter 10. It's suggested it's not the first time either.
Protagonist: There aren't. It's more of a date with a mare.
Twilight: A mare?
Protagonist: Has anyone ever told you you repeat things a lot?
Pay Evil unto Evil: After being tricked into selling her stock at a heavy loss by Cashmere, Rarity retaliates by sending her Poison Joke, forcing her into offering a similar discount, and stealing her supplier.
Royal Guards Are Useless: Played with. While the Royal Guards take Fluttershy's warning completely seriously, arrive as quickly as possible, and ensure that everyone is reasonably okay at the end, they're also completely incapable of apprehending a badly injured Slate until Rarity saves the day, despite outnumbering him two-to-one.
Recognition Failure: The guards completely fail to recognise Twilight and Rarity when they show up in Canterlot to visit the princesses in a flashback within Chapter 7.
Relationship Upgrade: Averted with Fluttershy, who despite some kissing and cuddling never really progresses with a relationship between Rarity and the protagonist, and is not intimate with either before it gets broken off.
Fluttershy's friendship with Whip-Smart is strongly implied to be heading in this direction as of the finale, though they're both happy to keep it slow and remain Just Friends for the time being.
Removed from the Picture: Both Rarity and Cashmere retain their photograph of the day Carousel Boutique opened. Yet while Rarity keeps her copy of the picture intact as a reminder of the good times, Cashmere completely removes Rarity from her copy.
Rescue Romance: Between Rarity and the protagonist, when Rarity saves his life after he ends up in Equestria on the verge of death, though it does take several months for their relationship to develop. It's lampshaded several times.
Rarity's take on Poison Joke. Everything it did was hilarious, except for the effects on her appearance. In fact, pretty much anything involving her appearance is serious business. Again though, this is Rarity.
According to Twilight, do not date Rainbow Dash!
Twilight: Umm...it's not Dash, is it? Please tell me it's not Dash. YOU HAVE NO IDEA WHAT YOU'RE GETTING YOURSELF INTO!
The protagonist comments on Pinkie Pie's perpetual happiness, reflecting that if he were constantly subject to it he'd either be the happiest man in the world, or he'd kill himself with a frosting spatula.
Pretty much anything involving Fluttershy according to the protagonist, who even goes as far as to call her "weaponized cuteness".
Technobabble: Pretty much any lecture of Twilight's on the subject of magic. The protagonist's attempt to explain what he did as a US Army engineer also bewilders Pipe Wrench.
Teleportation Sickness: The protagonist suffers this after Twilight teleports them to Canterlot. Justified as the spell is not designed to take human anatomy into account, which Rarity corrects for when she learns how to do this herself.
Tempting Fate: Rarity displays a rather startling example of Genre Blindness in Chapter 10, when she suggests that "I doubt we'll be hearing from that Slate fellow any time soon".
Triang Relations: Deconstructed. Rarity suggests including Fluttershy in their relationship, ostensibly to help coax the shy pegasus out of her shell and allow her to find love of her own, but it's strongly implied that Rarity is using the opportunity to act on her long-nurtured and somewhat one-sided crush on her friend. The protagonist spends significant time on trying to figure out where exactly this is going in the long term, as well as worrying about what impact it will have on his existing relationship.
Later on, this ends up causing him a significant amount of angst when Fluttershy confesses her love for him which he does not return, and that he admits to Rarity that he only wants to be in a monogamous relationship with her.
Twin Threesome Fantasy: The protagonist ends up having a dream of this with two Raritys. The real Rarity finds this quite amusing.
The protagonist gives a brief one to Pipe Wrench regarding the hiring of Slate, which Pipe quite reasonably rejects. See Hypocrite.
Cashmere gives one to Rarity when the full truth of how she was rejected comes out. Rarity for her part accepts the criticism and apologises for the way she lead Cashmere on.
Why Did It Have to Be Snakes?: The protagonist does not enjoy being flown about by a pegasus taxi, and makes no secret of it whenever he encounters one. Something Rarity enjoys teasing him over.
Will They or Won't They?: A large part of the story revolves around just where precisely Fluttershy's inclusion in Rarity and the progagonist's relationship is headed. After much confusion, soul-searching, and a near-miss after a night of drinking, Fluttershy ends up being Just Friends with the two.
Xanatos Speed Chess: Cashmere displays this. When Rarity turns up to her store's opening ceremony, she's quickly able to leverage the situation and tricks Rarity into going along with a costly discount, as well as forcing her into either publicly praising Cashmere as a friend, or refusing and damaging her own reputation.
You ALL Look Familiar: The Royal Guards, as per the show. Here it's justified as being due to magical armour used to conceal their appearances, to protect them from reprisal.
You Can't Go Home Again: Celestia and Luna's efforts to send the protagonist home almost succeed, but fail at the last second when he passes out from the stress of the spell. As a result, the spell is unable to be cast again without killing him, permanently trapping him in Equestria. Needless to say, this is not received well.
You Have Got to Be Kidding Me!: The protagonist uses a slightly more colourful variant in response to Cashmere's dramatic entrance at her store's opening ceremony, and as a response to the general insanity he encounters.
Your Approval Fills Me with Shame: Rarity after Cashmere congratulates her for retaliating after being tricked into giving away a heavy discount. Rarity points out that she is not completely above such behaviour when necessary, but unlike Cashmere, she takes no pleasure in it and only engages in it as a last resort.
You're Insane!: Rarity does this in all but name when she tells Slate he needs psychological help. You can probably imagine how well this goes down.