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Teen drama that aired on ABC in 2004-2005. The series focused on [[TrueCompanions three guys]] in HighSchool as they go through issues involving relationships, family troubles, but most prevalent, sex. The series is [[TheFilmOfTheBook based on the novel]] ''Doing It'' by Melvin Burgess.

Not to be confused with the 2010 rom-com starring Katherine Heigl and Josh Duhamel, or the 2006 YA novel ''LifeAsWeKnewIt'' by Susan Beth Pfeffer.

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!!''Life As We Know It'' provides examples of:

* ActorAllusion: Deb's cousin Sabrina mentions that prior to avoiding a tragic accident she was a [[FreaksAndGeeks Cheerleader and the Class Representative of the Young Republicans Club.]]
* AlcoholicParent: Jackie's dad.
* AllWomenArePrudes: Jackie in the first episode isn't willing to have sex with Dino just yet. By the time she is ready however, Dino is too shaken from his HeroicBSOD moment earlier that day.
* [[TheShrink The Awesome Shrink]]: Dr. Beiber, played by Peter Dinklage.
* BetaCouple: Jonathan and Debbie, and later [[spoiler: Ben and Sue]].
* BirdsOfAFeather: All three the main couples.
* BreakingTheFourthWall: And how! This was what separated this show from [[Series/TheOC other]] [[OneTreeHill teen]] [[Series/DegrassiTheNextGeneration dramas]] [[RadioFreeRoscoe of]] [[{{Edgemont}} the time]].
* BlackBestFriend: Sue.
** ButNotTooBlack: She has an African-American father and a white mother.
* ButtMonkey: Jonathan is this among his friends.
* TheCharmer: Dino.
* [[CoolBigSis Cool Big Bro]]: Ben's older BlackSheep brother Sam. Made complicated when [[spoiler: Miss Young starts hitting on him during the fallout after Ben and Sue's [[SchoolPlay on-stage]] [[TheBigDamnKiss hookup]]]].
* DawsonCasting: The cast, playing 16-year olds, ranged from 19-22.
* HeroicBSOD: Dino when [[spoiler: he finds his mom cheating on his dad with his hockey coach]].
* HollywoodNerd: Ben, Jonathan and Deborah.
* HormoneAddledTeenager
* HotTeacher: Miss Young
* JerkJock: Hockey player Dino is this. However he's also a...
* JerkWithAHeartOfGold: Despite his JerkJock moments, Dino shows that he really does love and care for Jackie and his friends and family.
* [[spoiler: LikeFatherLikeSon: Ben's dad also got into a sexual relationship with his teacher when he was in high school]].
* AManIsNotAVirgin: Dino feels this way, and is frustrated when he learns [[spoiler: his friends have had sex before he did]].
* MistakenForMasturbating: Jonathan's parents think he's masturbating when he's actually shaving. Although he admits to [[BreakingTheFourthWall the fourth wall]] that he was going to when he was done.
* RagingStiffie: Dino starts stealing Viagra from Jonathan's dad. He takes them for a "test drive" and they work...[[CrowningMomentOfFunny while he's wrestling with a guy in gym class]].
* RealSongThemeTune: "Sooner or Later" by Michael Tolcher
* SatelliteLoveInterest: Zoe to Dino. It is obvious that Dino only likes Zoe because unlike Jackie, she's willing to hook-up or have sex. [[spoiler: He doesn't go through with it because he can't stop thinking about Jackie]].
* SchoolPlay: Played straight with a ''[[RomeoAndJuliet Romeo and Juliet]]'' musical. Ben is made to play Romeo by Miss Young [[spoiler: as a way for them to spend more time together]] opposite of Sue. Eventually, Ben and Sue get closer, ending the play with a [[TheBigDamnKiss real kiss]].
** Oh, and the play is [[HeyItsThatGuy directed by]] [[FreaksAndGeeks Neil Schweiber]].
* SexIsCool
* SheIsAllGrownUp: Debbie's cousin Sabrina who went from a [[AlphaBitch stuck-up cheerleader]] to an [[{{Hipster}} alt-girl photographer]] after a tragic accident. She gets the attention of both Dino and Jonathan, much to Debbie's chagrin.
* SixStudentClique:
** The Head: Ben
** The Muscle: Dino
** The Quirk: Jonathan
** The Pretty One: Jackie
** The Smart One: Sue
** The Wild One: Deborah
* TeacherStudentRomance: Between [[spoiler: Miss Young and Ben]]
* TrueCompanions