Sexual issues Member To Member

Okay, my parter and I have a mostly healthy sexual relationship / desire / appetite for each other. The problem has become apparent, however, that I cannot get him off - orally, vaginally, with my hand, at all. He has to masturbate, he's very particular about how, and even at that, after extended periods of intercourse it takes him anywhere from 10 to 20 minutes to orgasm.

I've offered repeatedly to do "whatever", hoping that it was a familiarity, trust, comfort thing and if he talked me through what he was desiring, I could provide it and we'd "break through", so to speak.

The problem is evolving now into affecting my interest and performance, and it's doing an emotional toll. We haven't been together that long and, while he can bring me to orgasm easily, multiple times, not being able to return the favor is doing a number on me, leaving me feeling inadequate and upset. I'm becoming unwilling to climax. And becoming less willing to put all my efforts into helping him since his answer to "what can I do?" is pretty much nothing.

He blames lack of sensitivity due to botched circumcision. There have been times where he says he's close with me, but loses his erection. Does it sound like I'm dealing with a bigger problem? And how can I help him let me be part of overcoming it together? I already deal with a wealth of my own insecurity when it comes to sex and my body - so I feel I 've already extended beyond my comfort zone with things I've offered and don't know where to go from here.