What happened to us? | Q&S (AU)

Read first: Santana and Quinn were dating and they were happly (and gayly) in love before Quinn cheated on Santana with Finn. Doesn't matter how sorry Quinn is, Santana can't get over it and can't forgive her for what she did. Brittany is there helping Santana in this harsh time and the two at one point start dating. Quinn has to deal with the pain of seeing them together in school everyday, but Santana is not as happy as she might seem: forgetting Quinn is harder than she thought it would have been. Song: Which To Bury Us or the Hatchet - Relient K A big thanks to Toblia for everything! :)