I think that it's a story of a "friends with benefits" couple, where the girl starts moving onto a serious relationship with someone else, but the guy has actual feelings for the girl now. Hence him breaking into the house, when she didn't leave the window unlocked.
I think that it's a story of a "friends with benefits" couple, where the girl starts moving onto a serious relationship with someone else, but the guy has actual feelings for the girl now. Hence him breaking into the house, when she didn't leave the window unlocked.