I also can tell you all that the trust issues/OW thing is a long time in healing. I don't honestly know if that stuff will ever completely go away. The doubts & wondering if he's messing around again. Logically, I know that he doesn't have any reason to cheat again and that he knows that he can't do that again if he wants to keep our family together, however, what is logical about our sitches, right?
Girl, I don't know if this stuff ever does completely go away either. Quite a bit different situation than yours..but my husband was like you in his first marriage. His ex-wife is the one that cheated on him..I can only imagine how he must have felt and you as well.
I've given him no reasons to NOT trust me but yet it is so hard for him to completely give out that trust again. It's like it is always in the back of his mind, no matter how much he wants to give it up..the trust issue keeps coming back to haunt us.
It's hard on both sides. I'm sure your husband wants to earn your trust just as much as I want to earn IC's. And then I see your's and IC's side and see how hard it is for you both to let go of these issues. Hugs to you both and hang in there