: A character is attracted to someone whose sexual preferences exclude them.
- Straight: Alice is taken with Bob, who is already in a relationship with Charlie.
- Downplayed: Alice is sexually attracted to Bob who, while is straight, isn't really interested in sex.
- Alice falls for Bob, but once he introduces her to his boyfriend Charlie, Alice and Charlie hook up.
- Alice manages to make Bob and Charlie heterosexual with Applied Phlebotinum.
- Alice gets gender-swapped and becomes "Albert". However, she (now he) still has the mind/sexuality of a straight girl, despite the fact that Alice is now a guy, which technically makes "Albert" a gay man, perfect for Bob!
- Alice gets a sex change.
- Bob was in a relationship with Charlie, but they break up for some reason unrelated to sexual orientation. Alice is then surprised when Bob pursues her - turns out Bob is bi.
- Double Subverted:
- ... But it turns out Charlie was only trying to make Bob jealous, and isn't really attracted to Alice.
- ...Except it turns out they were faking it, and get the next ride out of town to get away from an obvious Yandere.
- Parodied: Alice is a Bob-sexual and Bob is an everyone-but-Alice-sexual.
- Zig Zagged: Alice is rejected by Bob, who tells her Sorry, I'm Gay. However, it turns out that Bob isn't actually gay and has just taken a vow of chastity. Alice is satisfied with a platonic relationship with Bob, until she finds out that Bob has been sleeping with Charlie. Bob apologizes and attempts make-up sex with Alice, who is now dating Denise.
- Enforced: The author created Alice and Bob as a way to inform the audience about sexuality issues.
- Lampshaded: "All the Good Men Are Gay."
- Invoked: Denise sets Alice and Bob up for a blind date, regardless of the differences in their sexual orientations.
- Exploited: Bob is in denial about his sexuality, so Denise needs to put him in a situation where he will realize he doesn't like women in order to get him to date Charlie.
- Defied: Alice avoids men who aren't straight or bi to make sure this won't occur.
- Discussed: "Don't feel bad that Bob doesn't like you; maybe he just doesn't like women."
- Conversed: "Poor Alice, doesn't even realize that Bob is gay..."
- Deconstructed: Alice doesn't believe Bob is actually gay, and thinks that he simply doesn't want to be with her. Alice, hopelessly in love with Bob, either becomes depressed or deeply jealous of Charlie.
- Reconstructed: Alice realizes that her love will never come true and it's not Bob's or Charlie's fault, so she instead becomes great friends with them.
- Played For Laughs: Alice is a Butt Monkey who never falls in love with a man who likes women.
- Played For Drama: Alice is heartbroken that her true love isn't capable of loving her back, and is so emotionally crushed that she swears never to love again.
Back to Incompatible Orientation