You know when a family has an Old Dog, and then they get a New Puppy. New Puppy gets all the attention, and Old Dog is miserable and alone.This is what's happening between me and my best friend.I'll call him D.D got the number of a scene bi boy, from a scene girl he met named M. D became fast friends with M because, well, I don't know. But he's like, obsessed with her. And he's now like best...