This is sexual in nature, so if you don't want to hear about it, then this is the time to stop reading.
She's 18 and a virgin. We fool around, and whatever, but we don't have actual sex. Anyway, it's really strange because she's never had an orgasm, before. She doesn't masturbate or ANYTHING (as a guy, this is impossible for me to imagine

). I never do anything that she doesn't want me to do, and I stop whenever she says to, just because I'm considerate like that.
But when I'm trying to stimulate her in her.... nether regions, shall we say? she'll be
really into it for a while, but then she gets less enthusiastic and eventually she starts crying because it just doesn't feel good, anymore, she says. Orally or manually! It makes no sense to me. It's not like she's pre-pubescent and it's not as though she doesn't have a sex drive. And it's
certainly not as though I don't know what I'm doing. I love her to pieces and I want to make her happy- in every way, but I'm beginning to think that maybe there's something very wrong with her. Any input?