Nervous to hang out with a guy alone? help me?

Ok im nervous to hang out with my boyfriend alone or anyting i mean we dont ever have anything to talk about were not in any of the same cles but my friend justice has a boyfriend and there not in any of the same cles but she is not nervous i wanna know how i can not be so vervous around him and what there is to talk about let meh know because i could call him and talk or out at recess we could talk also were in middle school 7th grade.