Whats going on?

my problem is with my boyfriend--it seems like whatever i say is wrong, and then he gets in moods and becomes all jerky and then he tries to make me feel bad, and he doesnt like it if i talk to other guys event hough he says he doesnt care he always still gets mad. but yet on the way home today he was talking to this other girl on the phone the whole way to my house and he could carry on a convaersation and everything but he never can with me or he doesnt want to-- i guess he likes me a lot according to him and to his family and i like him a lot too. but one of the things that bothers me is the mood and how he always can do things or say things but when i do its not ok-- what should i do and does anyone know why he does this?