My Boyfriend really is nice but...?

My Boyfriend really is nice but i just feel very embarressed when we have . we have had it three times in his car and i enjoyed it but i kinda feel scared of him tounching my body, dissing it. i mean just the other day my mate was messing about and we had a lil tiff and she said ''your (she sed another word lol) is as big as a welly hole" and he said "for the record its not" so that must mean he isnt insurcure and its not just that he talks about it in cl and he even said to the teacher "only cause your not gettin it and i am an i was sittin right next to him then he kissed me on the lips to show who he ment i mean its embarrasing help what shud i do!