Parents divorced. moms friend/boyfriend. help!

My parents are divorced and my mom has this guy friend. They have been friends even before my mom was divorced. I REALLY HATE this guy and I am really worried and slightly angry!!! I think they are becoming more than just friends even though my mom says...

they aren't. I mean they hang out ALL the time because he lives just 2 blocks away from us AND he is my sisters ballet teacher! Which also creeps me out... But anyways they are really close friends and now my moms guy friend is calling her his girlfriend which bugs the crap out of me! I asked my mom about this and she said it was nothing and that it was just his way of saying she was his close friend that is a girl and that they were just really good friends. I don't know if I believe her though at all! I have tried telling her that I really don't like this guy and I have some pretty good reasons for not liking him but she just tells me to shut up and that I can't choose her friends and ya da ya da ya da. I asked her so many times if they were more than just friends and she said no and that they were just really close friends but she also says that she doesn't KNOW what they could turn into in the future which I am SO worried about!! And also there are lots of people that are rumering that they are boyfriend and girlfriend and even some are saying that they are getting married!! WHICH I HATE!!! I have considered running away but don't know if I should. But if they become more than just friends I am DEFINATLEY running away. Please give me some advice on what I should do! HELP!

What reasons do you have for disliking him?

does he abuse you?
if he does and your mom isn't doing anything about it, tell authority. police,teacher, etc.

Answer to reb1312: He smokes (Which could be potentially bad for my health. Second hand smoke and all) He is kinda creepy... He is SUPER annoying! He never shuts up and he plays music SUPER loud! Which could damage my ears. He acts like my dad and trys to punish me! And he has anger bursts. And He is kinda poor and asks us for money some times!

Answer to tom_boy90s: No he doesn't abuse me

Lots of people smoke!Big deal!As for punishing you and having anger bursts,well...why does he do that?Sounds like you mostly hate him because your mom is friends with him.