Rachael, The one thing that I would do is stop talking to him about it. It's very evident that he's not ready to face up to what he's done and the more you talk about it, the more he's going to want to shove it very hard under the rug. He's like a stubborn child who is going to show "mom" that he's the stronger of the two and will stand firm on his beliefs for now.
He's telling you what you want to hear about going to the counselor and the priest just to get you off of his back. Please stop "harping" on trust, etc. The more you push, the harder he's going to pull away.
You have to do what you need to do for yourself, i.e., sleeping in another bedroom, etc. You have to take care of yourself and allow God to work on your man...you can't make him do anything and you have no control over him. You are not his mother and you don't want him to look at you that way.
Please, please stop talking to him about all of this. He's not ready to do so. You have to keep the focus on YOU and allow God to work on him.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
