Most Helpful Guy
It sounds to me like he's insecure (i. e., he's not sure he's good enough for you, and you may leave him), and so, whether he even realizes he's doing it, he's trying to make YOU insecure so that he can feel more secure himself. Of course, he's being an idiot, but in the moment, it seems to him the thing to do to make him feel better.
Most Helpful Girl
I don't know your ban size so I can't say if you are small or not. What I can say is that your man should appreciate you and shouldn't be making those types of comments and treating you that way. Maybe next time you should look at his dick with a sad face and be like, "If only it were a bit bigger, I might enjoy it."