Current; ex; love; confusion :/

So I have been going to school with my current boyfriend since about 6th grade. I never really noticed him until this year my 10th grade year, and as freshmen he was chubby and sweet and he had a girlfriend. They were so much alike they loved Star Wars and D.A.D and they were so in love. When they broke up months later we began to talk, we hit it off and now we are dating but we are from two totally different social groups.. He's smart and different and I'm pretty popular but not just a pretty face I have goals and a 3.8 GPA. I never let my social group define who I am but I'm scared ... The girl he loved is like him.... Same friends same favorite movie same interest. His friends don't even give me a chance they think I'm popular pretty and a bitch and I'm not. I'm falling in love with a man and I'm scared he is going to realize that his ex is better for him then me... So girl to girl or women to women even a friend to another friend and even stranger to stranger what do I do ?