Mikey has the weirdest crush on Pete Wentz, and mistakenly believes Pete and Patrick are dating (they aren't). Mikey also happens to need a date for Gerard's birthday party, so it only makes sense to ask Pete to be his fake boyfriend. What do you mean that makes no sense? What do you mean relationships will be ruined? What do you mean everything will go wrong? (Fake Boyfriends AU, High School AU)