Let me get this straight.

He won't discuss HIS infidelity with you because it makes HIM uncomfortable?

Do you see the problem with this?

He cheats repetitively, without an ounce of thought to your comfort.

Now (supposedly) he's stopped doing that, and you need him to discuss his behavior in order for YOU to heal.

He refuses to discuss this, because it's too uncomfortable... for HIM.

Do you see the problem with this picture?

All he cares about is how comfortable HE is.

If he gets uncomfortable, he cheats on you.

If you get uncomfortable, you just have to suck it up?

Come on...