Like at the beging he was always wanting to hang out and stuff and he is still like that other then somedays he blows me off doesn't text or call me and if I call him he acts weird but then like the next day he is back to normal I don't know if its something I do but I'm confused what could it be

You don't need to guess his behavior, just ask him what's up with the mood swings. Communication is the key to a successful relationship.

Yeah ask him. It could be that he is busy with things he has to do. It could be behavior that is typical of some guys just wanting 'their' alone time. It could be he is hiding something.

Are you a teenager... if so teenage boys are complicated just ask.. you know what is going on... he may be hanging out with the guys when you call... talk to him