My boyfriend is so jealous because a lot of guy try to talk to me. I dont know what to do!??!?

He just cannot take it. He checks my myspace comments all day, texts me all day, and he send ims all day as if hes trying to catch me doing something wrong. When a guy leaves comments all on my myspace he gets upset. He gets so mad when his friends tell him I'm fine or that I have a big . I dont know what much I can do. I cant hide what I look like or change how people think of me. Hes really annoying me. My friends say i need to dump him... if so how?