I just heard about this, and it seems to describe me to a T. What can I do about it? Is there a way to make my girl happy?
well how can I "slow down", she's really......attractive. Is it normal to get "hard" seeing her provacatively?

Use thicker desensitizing condoms. And practice a little control. Most guys have this issue, and most have to learn to slow down, regain control, and then go on.

I had a friend whos BF had this problem and he practiced pacing himself. He would masturbate and do this as well, when he felt like he was getting a bit too excited, he would start counting to ten, pull back, breath, think of something boring... whatever.... and when he was calmed down, carried on.

This took a while but he managed to lengthen how long he would last. He also would wear two condoms to desensitize himself.

Personally, also, from a woman, my advice would be to bring your gf to climax using oral, hands, whatever...even a couple of times and THEN have sex with her. She will be so satisfied, she really wont care how fast you come. She will be happy, you will be happy. Everyone's happy!