My room mate is a good guy and everything?

but he is an embarment in public. he is overbearing and tries to be intimidating when it really just comes off as annoying. everytime we go to hooters he tells the waitresses that one of the girls on the calender is his x girlfriend. he is nice but in public he tries to be rude and talk loud and inconsiderate. maybe i shouldnt hang around this guy, he makes me look bad. what do you think?