Why do u think a guy would do the following:?

1. Avoid a girl and only talk to her via Facebook / text after they tell each other they like each other.
2. Move classes after the same girl gets a boyfriend? (The guy acted like a **** so the girl thought he was uninterested & found someone else who seemed to care more about her) Why would he claim it's because she's "immature"?
3. Care if it is "awkward" between him and the same girl?
4. Ignore the girl after she splits from her boyfriend and won't even talk to her via fb. (The guy started speaking to the girl again a week before she split up with her boyfriend)

1. Boys are ****s. Trust me. Been there done that, I have been ignored as well, they just want you to fall for them and then they ***** out.
2. Again. Being a ****. Pretending he's offended by it.
3. Bull****. They're like attention seekers. D:
3. Oh god. He's just a ****. Screw him, he doesn't want her but he doesn't want anyone else to have her.

He's most likely upset but in a strange way because you have a boyfriend now.