Been with my girlfriend for 3 years and been having sex for most of that my only problem is when we first started I took her virginity (supposedly though there was no blood she was very sensitive and very tight) it made me feel good also knowing my dick was enough to satisfy her. Though I have two problems I can never seem to make her cum. I've tried everything I swear. She gets close but never actually does. And also she has gotten really good over the years like the way she moves and everything it's like she's a pro (though some positions still hurt her) and its scary, she also doesn't feel as tight as she used to be. Makes me feel like she has someone on the side?
You shouldn't worry about not being able to get her to cum while the two of you are fucking. Only about 1 woman in 4 (I *think* that's the statistic) can easily (if at all) climax by means of vaginal stimulation. Can you get her to cum by petting/fingering her, or has she NEVER cum in all the time you've known her? (Most of the women I've known leaned about orgasms via masturbation before they ever lost their virginity.) As for her not feeling as tight, a good part of that may be that she is not longer as tense or nervous as she probably was the first time the two of you fucked. If she enjoys the sex (even without having an orgasm), she's almost certainly a lot more relaxed (and wet) when you two fuck. That could account for the difference.