-It was a Soulmate AU.
-After meeting your soulmate you develop powers.
-tiny!Steve and Bucky share a small apartment and Steve sleeps on the couch since he's so small it doesn't bother him.
-Steve wakes up one day after meeting Tony and he's got all of the powers he has in canon as well as being so huge that the sofa is uncomfortable.
-Tony doesn't wanna make weapons but Howard wants him to so he has him kidnapped to put him back to work making them.
-Tony stays with Steve and Bucky after telling Howard he doesn't want to make weapons.
-Bucky's soulmate is Natasha.
-I'm pretty sure they're in college/university and Steve is an art major.
That's all I really remember.