>>2594
The first time I gave her oral sex she had an orgasm, but after that she never really could fully get one.

>>2597
Some extra info:

We've been dating for a short while now and I'm the first "serious" and sexually active relationship she's ever had.

Can't have an orgasm via what? Vaginal penetration? I don't even know if you have a dick. What were you doing exactly when you *did* make her come? It's common for girls to have difficulty reaching orgasm without stimulation of specific points, i.e. clitoris. If you can't get enough finesse to really experiment with whatever it is you're using (assuming penis), try playing around with something a little more dexterous, like fingers.
If she masturbates enough to have an acute awareness of her own physical sexuality, she should be able to help you out in relation to what should happen where. Regardless of any other factors, stress to her how important it is that she communicate with you. If not on what works and what doesn't, then just on anything she can. I can't stress that enough.