Oh wow, this is a big topic and lots of different opinions on it.
First, I would like to commiserate; My H pined and cried and mourned the loss of the OW for months. It was hell. I would not have gone through it if we didn't have children. I can say that with confidence, it was horrible. I still get caught up in wondering if I can live with it here and there, but I am happy right now. I am safe right now. I am strong right now. I am ok even if my M ends, right now.
We recently addressed this together, I wrote a huge (10 pages) journal entry that I shared with my H about those first days and the pain that still resides in me. We had never really adressed those early days after dday because we were trying to survive - literally trying to live each day and manage to keep our children alive and healthy. So I wrote out the events of the first 10 days after dday. It was very very hard to do. I took 3 days to come back into myself fully after re-living that horror.
Then I had him read it in front of me. I explained that I didn't even want answers or responses, but that I just wanted him to know (now that he is out of his fog and remorseful) exactly what he did to me - I just wanted to be heard.
He read it, quietly cried, discussed the deep remorse he has for his behaviour, explained some of his rationalizations for that behaviour (that were wrong and awful too), and was so so sorry. For me, the important thing was hearing him acknowledge that he treated me horribly. I know he's said that here and there, but I needed to hear it at this point in time, and know that he was willing to give me what I needed. So it was a very rewarding and connecting experience for us.
So, finally to your concern about forgiveness. What has really helped me in IC is this thought; forgiveness is not saying that the act was ok, it's not diminishing the immorality or pain or injustice of what was done to you. It's acknowledging that it happened, that it is unchangeable, and releasing it from yourself. Forgiveness is for the forgiver, not the forgiven. The forgiven may benefit if they are remorseful, but it is not the objective of forgiveness. In thinking of it this way, I am having a far easier time with forgiveness. I can really see that at this point in R (1 year for me, 2 years for you), I am the one paying for my hovering around the pain of the affair. My H pays too, but I no longer seek to hurt him, I want healing and health for us both.
It's all so sad, so so sad. How easy, and even addictive, to marinate in that sadness. I have learned that I can live through the unliveable. I can survive the unimaginable, so I deserve to live life the way I want to right now. That's my choice. I try to stay in the present as much as humanly possible, feel what I feel when I do, write about it, talk about it, and then move forward. That last little bit, moving forward, is so hard. But it is the most rewarding.
Part of my ability to do this is a building of independence too. I am making sure that I feel safe with or without my H, that we are both here by choice every single day. It hurts my H that this is part of what I need, because it reminds him that he was (and kind of always will be) unreliable. That his choices purposefully left me in this position. The difference now as I creep along with forgiveness, is that I never have the intention of hurting him. I do not try to weirdly protect him like I did in the early days, but he knows where my mind and heart are now - becasue we talk about it.
Lordy how I rambled on. Sorry.