great sex, can't last with girl i really care about

I have been with about 6-7 different girls and had decent sex, I would have no problems with making sex last 15-20 minutes. I am currently in an awesome relationship with a great girl that I can see being with for a long time. We are great in bed but my problem is that recently i am only lasting like 5 minutes on average and feel like I am not satisfying her! its rather embarassing actually and never had this problem before, she says its not a problem but I know she is not being pleased. Why is it I go my whole life and never have this problem and its effecting me now? what can i do about it?

 

Are you using condoms? If not, try that. You'll probably feel less and last longer.

 

masturbate a couple hours before you have sex with her. or have sex with her twice either way eventually youll take longer.

 

practice makes perfect.

 

I had an ex like that. He never lasted very long but he was big. It never got any better an eventually it ended

 

Try jerking it a couple hours before.. condoms help, some have a numbing agent in them. Also, if the issue is that you feel your girl isn't being satisfied.. munch some beaver for a while, practice makes perfect. Get her off 2-3 times before your dick even goes in, and you're golden.