Well from what I've read there is one thing that came to mind that I feel is important. The solution is not going through life avoiding ever talking to other men. It is not only nearly impossible to do, in the long run ends up being unfair to you and will feed on your own challenges you already have. But, that being said it is understandable why he would expect this and also very reasonable for you to initially accomodate him this way but it's just not the long term solution.

Eventually there will come a time when you have to talk to some other men, circumstantially or whatever the reason, it's inevitable. So my advice to you is at some point you need to break out of that pattern and do something different. That is, if and when the time comes, go out of your way to give him reassurances as to why you are or will talk to this other male, and let him know regularly, if this is a longer term thing, why this person is someone you need to talk to and reaffirm that he's the "one" there is no one else, and not to worry. The thing is that's the only way he'll be able to trust you again, is seeing you talking to men without fllirting with them or pursuing them in that way. avoiding men altogether will really just extend the time it takes for this to change.

I'm not sure if this is making any sense but in a nutshell, to earn trust you have to give him reasons to trust. When you're trying to earn lost trust you have to go even further (the continual reassurances in the beginning, etc) to gain it back.

Hope this helps.
S4