Why does my bf want to give me oral?

He won't stop asking if he can eat me out. I've told him repeatedly that I'm not comfortable or even interested in it. But he won't give up. I don't even like his mouth on my breasts why would I want it on my crotch???

I just don't get what his problem is. I said no, just accept it and move on. My vagina would probably get some kind of infection from that anyway. Not to mention I have enormous meat curtains so I probably wouldn't feel anything and just feel embarrassed the entire time