I feel wierd dating a guy smaller than me?

I guess I'm a bit shallow but I'm trying to get over it. I am 5'2". I am not fat but I am not super skinny either, I am a pretty athletic gurl so I am pretty nicely toned and so im more of a thicker type I guess. The guy I just started dating is the same height as me and he is super skinny and not really athletic at all. He is a great guy, like no other guy I have ever been with, he treats me good and makes me happy. so I def don't want his size to bother me. he is a very handsome guy, but he is the 1st guy I have ever dated that isn't tall or muscular, so sometimes itsjust awkward. My frenz think we look funny together so I gotta hear all the jokes and snickering, which I don't really mind but I know its makes him feel crappy... what can I do to get over the whole size thing? Advice? tips?