I don't mind you asking.
I have only ever climaxed with two partners (both long term) though I have had a few more (maybe 10 total). This was only possible as I felt totally 'safe' with them (i.e not emotionally exposed/vulnerable)
I have always enjoyed sex though.
The ones I didn't climax with, I just couldn't get past the feeling of loss of control, emotional exposure and feeling vulnerable. I didn't have strong feelings of obvious disgust as such, but no way could I go over the edge in the company of someone else. Couldn't say why - it's just how I am.
The two with whom I did go all way (one is now dh) the difference was the total trust I had with them. The first it took me a year to get there, and that year was a slow development of deep trust. It took that long as (despite him obviously being patient and keen on me) he struggled to understand the problem and would get upset/angry about it which just shut me down and prevented me relaxing - making it a Big Goal made me think about it and that was exactly what I mustn't do! He thought it was something he was doing, what was the matter etc etc and couldn't accept it was just how it was.
Eventually though, despite his worries, I got him to take the spotlight off it, and then it was able to happen, after that it was plain sailing as he relaxed, and so I could and the trust was there, so then there was no stopping us! 
The second (dh) it was much faster (think about 3 months) as he was much more being all about whatever I said went, and it didn't matter, and I mustn't worry, it was nice if I did but not the be all and end all. So long as I enjoyed it etc etc. This meant it was just a bonus not the end goal. That meant I could not 'think' about it.
To conclude, having got all that trust, I felt fine when I went over the edge, no crisis or revulsion. But the inhibitions are so strong getting there at all is a pretty big thing. I couldn't honestly put a label on the inhibitions, maybe shame, maybe loss of control.... maybe a whole combination of things.
Now we have a great sex life and I usually orgasm first, but I still can't do it if I have my eyes open!
Nuts isn't it.
So I guess we're a bit different if similar, I would say that being open about what is going on with your partner is helpful (assuming he is a nice person) because you may be surprised about the pragmatic accepting point of view he has on it (? I was!)
If you are able to open up about the complexities in your head behind the orgasm (or not), it is likely he can reassure.
Also, if he has the heads-up, you will know if you go all 'peculiar' at the event he won't be caught by surprised. So you will not worry about your own reaction so much, then whatever happens, happens. Thus, if you do still feel hideous, he will be expecting it and can sweep you into a huge big hug which will make you feel better and gradually you may be able to get past those feelings and find it becomes much more natural.
I think the fact that you are currently faking it, whilst it maintains an even keel and maintains a comfortable status quo, it isn't actually going to ever alter it, or get you to a place where you aren't getting that problem reduced/sorted. So if you would like to be able to do it with him, I think you need to approach it a bit differently.
HTH
Good luck. :)