My current girl can never reach a "complete" orgasm while we're actually having sex. It only works for her when I do oral, which is not a problem at all. I love pleasing her. But when we try to have sex she's good for the first 10 mintues but then I just start to "hurt her"... now I'm not sure how to take this. My previous partners have been fine, and that's why I'm confused. Is it that she's not attracted to me, or am I actually hurting her... I know it takes different things for different girls whether its oral, anal, or what have you but I've never got the "it hurts" before...
And I've tried the communication thing, trust me, she says she doesn't know what's wrong
So is it me? Or her? Or maybe both?

Try using Astroglide for lubrication. She may not be getting wet enough and you are causing friction which may be irritating her vaginal wall. It may not necessarily be you. Take more time to get her arroused and more lubrication.

There are a lot of statistics out about how long males and females engage in stroking during sexual intercourse, females who orgasm do so within this time frame. Five to ten minutes is about average, that's all. It is unpleasant for a female to have too much stroking... it leads to bladder infections and swelling and irritation.

Don't get your sex education from porn... you will get the wrong idea about female sexuality.

I think you would find a book on female orgasming very interesting, real woman and orgasms. :) How to be a helpful and exciting partner. Remember, real women.

Choux. Are you kidding me. Sex education from porn? Seriously..
I do know how to make her orgasm, and I'm pretty sure she is a real women, so there is no need to be condescending. The question was WHY this is happening, now I thank you for your first input, that helps, but with the little comments... come on

Let her start on top, and pay attention, and see what happens. Are you to rough? Do you use lubrication? Usually when the female is in control, she is more prone to orgasm, than not. That means let her experiment on you, and you do as your told.

I do agree about the cowboy position, more clitoral stimulation occurs, the only problem is though, the orgasm is too fast unless the woman learns to control her reflexes and improves her timing. In this instance though, artificial lubrication is not good.

Ms tickle

Practice make perfect!
If at first you don't succeed, try, try, again.
If you slide off the horse, get back on.
Never give up the ship
Pip pip, and carry on.
... get the idea?

Many women can't orgasm from intercourse alone. Have her try playing with her clitoris while you are engaged in intercourse. I would say 70% of the women I have been with required manual manipulation of their clitoris during sex to orgasm.

I never thought I was the problem because I always understood that many women can only have clitoral orgasms.

Don't let your ego into it, help her help herself be satisfied.

Thanks to every one :)
It's good to know it's not too un-common, We'll see what happens.
Wish us luck haha
Thanks again.