Let's be 100% frank here. You did something extremely selfish and it has damaged your relationship. It would be nice to think that it is fixable but let's be honest here: it's not.

No matter what happens between the two if you from here on our there is one undeniable fact: you forced him to do something he didn't want to do that goes against everything he finds important in a relationship. You did so because you were selfish and only thinking of yourself. He went along with it because he cares about you. You kept engaging in the activity even when he was clearly turned off and wanted to stop.

This isn't something he will ever forget. There is no magic button to make this right in his mind. Even if he agrees to a threesome with another girl he has specifically said it is NOT something he wants. You said yourself he wants intimate, face to face sex...yet somehow he's not going to be affected by this?

I mean this in the nicest way...end your relationship. All you're going to do is hurt him. Your feelings of intimacy and sex are on completely different planets. There is nothing wrong with you liking threesomes and wanting to do things like this...but there IS something wrong with you wanting to do this in a relationship with him.

You are using him by allowing him to give you all the emotional support and emotional intimacy you want while robbing him of the physical intimacy and closeness he needs from you. It is selfish. You may care about him and vise versa but this isn't love on your end. Not even close.

(By the way I'm speaking as a 28 year old father of 4 who has only been with my wife, and we have been together since we were 17. We both prefer intimate, face to face contact and if my wife ever insisted on something you have forced him to do our relationship would certainly be broken and unfixable).