What to do when my boyfriend cares more if I cum than I do?

It's very hard for me to orgasm during sex, even if I help myself. I can do it all by my lonesome very quickly, but as soon as I'm with a guy, I just can't cum. However, I'm not worried by this whatsoever. I love sex, and I love everything about it. I love the act of sex, I love pleasuring my partner, I love the sights, smells, and sounds of sex. If I don't cum, meh, I'm still very happy. I'm no happier if I do orgasm during sex.

My problem seems to be keeping my partners happy with my contentment with not orgasming. They seem to think it's their life mission to make me orgasm. I had one boyfriend with whom I actually faked orgasming for a good two years because he was so upset that he couldn't make me cum. Every other partner I've had since then has taken it personally that I can't orgasm with them. It seems to put a bit of strain on my relationships.

I am with a new guy that I care for very deeply. He has been very understanding of my not orgasming, but he seems to try that much harder, and I think he is getting frustrated. I have orgasmed once since we've been together (a mere month and a bit), so it can be done, but I really don't want him to take it personally. I've told him already about this, and he said he was surprised that I'm cool with it. I REALLY don't want him to be disappointed and have this strain our relationship (like every other relationship I've had). I really do like him that much.

What can I do or say to ease his mind?


Can excessive orgasming deplete endorphins?

Since orgasms cause a release of endorphins into one's cerebral-spinal fluid and endorphins are also somewhat responsible for the emotion of happiness, etc., is it possible that excessive masturbation and/or intercourse would lead to a depleted level of endorphins in the system that could in turn cause one's affect to become somewhat "flat"? Could a sustained low level of endorphins in the system induce depression and/or mood disorder?