Tony Stark has a daughter Y/N, who’s exactly like him. She’s all that sarcastic, independent, genius college student. She studies Engineering at Columbia University. And everybody knows the unspoken rule - no one from the team could date her. Which suddenly becomes difficult, because she lives in the Avengers Tower with everybody, and Sam Wilson is definitely in love with her (and so is she). They try to deny it. Age difference, positions… That just stop matter suddenly. But Sam is afraid to make a first move - he knows he will have to meet the consequences. So he tries to ignore his feelings. So is Y/N. But still, eye contact a little longer than it should be, occasional touches. All the Avengers feel the tension and even rarely jokes about it, but mostly they stay silent about it. The dun starts, when Tony starts to notice that tension too…