I can't get my GF to orgasm or enjoy sex to the fullest.

I'm 26, she's 24, and we've been together for a little over 2 and a half years.

In the beginning our sex was great, frequent, diverse and emotional. Now it's a lot less frequent, diversity lacks, but the emotion is still there. But that's not the issue I want to talk about.

I simply can't get her to orgasm and I've tried pretty much everything. When going down on her, which I enjoy tremendously, she says she doesn't feel anything, it's just like licking her arm or forehead. She never had an orgasm, and after reading on reddit that it's a matter of her knowing her body, I suggested that she should try to masturbate. Her response shocked me:

She said that she would NEVER do that, she believes that's the lowest thing she would ever do and doesn't want to do it. She also had this crazy idea about sex that it's animalic and only animals can't control themselves, and that's one of the reasons she doesn't have / want an orgasm, because it would mean for her to "let go" and enjoy it, something which she considers bad, because only animals lose themselves in pleasure and let go.

I've managed to some degree to break this reasoning in her (or at least I hope so) by telling her that it's a lot more than that, that it's the emotion that makes us different, that we are in love and sex is a way to get closer and feel eachother emotionally. She agrees with this and says that she indeed feels very close to me when we do it, but doesn't feel any literal physical pleasure, just emotional.

In a lot of ways it makes me feel less of a man, even though I try to consciously realize that's not the case, to no avail, it still makes me feel bad in bed that I'm enjoying it so much while she just "does it". It feels like she's only doing it for me. We had this talk and she says she doesn't do it just for me.

Anyway, this is getting too long. I would really appreciate some advice on how to get these ideas out of her head, to make her "let go" and enjoy it.

Thank you.