As a Bipolar 2 Male with somewhat the same issue, I have found that it isn't about self gratification. It's about just getting the job done. I dont get off mentally through the act, its a physical release. Where I get off is giving my partner pleasure, even without intercourse. Have you tried letting him focus on you, letting him pleasure you. Sometimes it helps, yes you may feel selfish about it, but alot of times in our eyes, it's the act that gives us the pleasure. The physical part is just mechanical for us. I dunno maybe it's just me.. but including yourself in these actions may help. By not forcing sex, but trying to focus on intimacy instead, you may find the connection come back. Our brains are just wired differently. When were on a high, our sex drive is usually at it's peak, when we hit a low.. it's down, however we might still feel the desire to pleasure our partner, and not having intercourse used to make me feel like i wasn't good enough for my partner. Now that it has come out into the open, it works well.. When the mood is there, the intercourse happens, but she understands that sometimes i just want to give pleasure and not be expected to perform outside of that. Hope this makes some sense and helps out a little.