A guy I'm seeing has a small penis?

I had been seeing him for a bit. Everything was going well, but thinks got hot and heavy last night. I ended up finding out his penis is really small. Like 1 inch flaccid, and 3 inches (at best) hard. It's very thin in width as well. I can't feel anything, and almost impossible to have sex. I'm used to and enjoy rough sex and he's just not capable of "pounding" without falling out. I really enjoy sex and I feel like it's an important bonding part to a relationship. I feel like a jerk for having this problem, but I'm not sure what to do. He's also has not had sex much, so he doesn't know what to do.