Maybe you’re right, that she doesn’t care enough about your needs like you care about hers. If that’s the case, then you guys don’t stand a chance and you should get out now.
Maybe you’re wrong and she actually really does care a great deal but her inability to get you to orgasm is making her feel inadequate. So much so that she’s starting to feel insecure about all of it and it comes across as her not wanting to try harder or do different things. Instead, she doesn’t want to try more because that only means failing even more, and then she feels like she’s letting you down – that she’s not good enough for you – that she’s not enough for you.
I don’t know what the truth is.
So my advice? 1) She’s gonna have to learn to figure out how to get onboard with oral. I mean, really. It has to happen. She’ll get used to it the more she does it. At least she can start off with it and end with her fingers. That way it’s evened out and neither her jaw nor her hand will wear out as quickly. 2) You should save up money for that dildo or strap on. You want to orgasm, you gotta work for it. You need to figure out what the best thing is for you and the only way to do that is through experimentation.
Make sure she knows that it’s not her fault that it takes you a longer time – it’s different for everyone! Really sit down with her and explain (WITHOUT ARGUING) how bad it makes you feel when she stops and it makes you think that she doesn’t care enough to please you. Be as openly honest as you can, heartfelt, vulnerable, all of it. It’s the only way to really get through to a person.
Don’t accuse her of anything. Use “I statements”. I feel, I want, I wish, I like, I don’t like, etc. Nothing that comes across as “YOU DON’T LOVE ME ENOUGH TO MAKE ME CUM”. For example: “it makes me feel like you don’t care about me and that hurts so much” vs. “you don’t care about what I need, I care more about you than you do about me!”
Big difference, right?
After that conversation, try those different positions you want to try. Get her excited about them by being excited to try them on her as well! It seems like you might be encroaching on the rut of “sex as a chore”. So break out of it. Try some new stuff. Don’t put all the focus on the orgasm, just enjoy whatever it is you do feel. Try doing lots of foreplay, have fun, and neither of you orgasm! It’ll take the pressure off, and in the process, actually help you get closer to your goal.
If an orgasm is the only thing you care about, then you’re not doing it right.