They went from best friends to nothing. Every time they passed each other in the halls, they ignored each other, unlike how they used to smile and laugh and at least give a summary about their day. It's been four years since then, and she's had enough with all the teasing, so she decides to change, and he comes running back. This proves her completely right. Four years ago, he was a two-faced-bastard, but now he's THAT Two Faced Bastard.