It seems from your message that you do manage to have orgasms, so it's not an insoluble problem. Is there a pattern to when you can release and when you can't? Sometimes tiredness, timing of sex in relation to taking medication and simply being frustrated about not cumming can be significant factors. But I think there's a another factor that's not yet been fully explored scientifically. It seems to me that people (particularly women) who are depressed/stressed generally have a higher libido than those who aren't. My theory is that if the anti-depressants are doing their job, they will have a negative short-term effect. I know most people feel that depression/stress reduces interest in sex but I'm absolutely unconvinced about that unless it also affects self-worth.

I've counselled a number of women who share your experience, some of them quite desperate to resolve the issue. Almost all of them have said that their major concern was for their partner. In most cases, I believe that was true to a point. I think the real issue though, is concern for upsetting the partner and perhaps even losing him. My very best advice is for both of you to join a Tantric class and, if you don't do it already, learn to meditate. You might even end up with permanent whole body orgasms and becoming very relaxed