Help! - unable to keep erection

I'm starting this new relation with a girl i'm crazy about. So of course I want the sex to be wonderful. I'm suffering from performance anxiety but have worked threw that a little bit with her support and help. Now the problem is that I cant keep my erection during sex. Sex usually only last a little while before i eventually lose it. Other than some nerves, one huge problem is that i'm not gettin enough sensation on my penis. I guess I need to go fast and hard with alot of friction to really sustain an erection and eventually orgasm. The problem is she HATES it like that. She prefers it slow and sensual. Now I think it like that also and i want to do it anyway that will please her but I just cant keep it up going slow and sensual.

Can someone help me with suggestions or advice? Help!!!

Are you able to talk to your doctor about this? They might be able to help and rule out any physical causes.

Maybe start by going down on her or doing whatever it is to make her come many times, and then hopefully she can handle rough, fast sex the way you like it.