New BG - Big One

My new boyfriend, I guess you could call him a boyfriend, is huge between his legs. We dated a couple times and I gave him a BJ once, and the next date I gave it up and was going to let him fuck me. The probably was he has a really huge cock, not so long, I've had 8 inchers before but not thick like him. It's been 4 nights now we've had sex and each time he wants to do it twice. I really can't take it, it's very very uncomfortable, I'm just waiting to get it over with, and I never cum.

I don't get what all the girls are talking about when they get a big one. I honestly don't like it, but don't know how to call it off. We're not exclusive, but I haven't had sex in 3 months, I really don't like it at all.