Sometimes its just a matter of the position, and we are all different. For me, its harder to have one in doggie style, but possible. If I am on top, it will happen very fast, no matter if I am facing him or not. I think for me some of it is very mental. For instance, if I am on top, facing away from him, and I can feel his hairy balls bumping up against my vagina..... oh that sends me over the EDGE! Sorry about all the information concerning his hairy balls

Do you start out with oral sex and using your fingers in her ass? This helps, too.