Ailina, I feel for you, and will pray for you.
I’m dealing with similar issues of forgiveness. Whether my husband has been sexually unfaithful, I couldn’t say, but he’s certainly had two, and possibly more, inappropriate friendships with women that he felt the need to keep hidden from me. When he was given an ultimatum about the very long term secret friend (actually, I think I said to re-direct her to our joint e-mail account, NOT that he had to end anything), he very angrily ended it-- or said he did. I also know he lies, so it’s impossible to know the truth of anything he really says or does.
This link about forgiveness was posted sometime ago on these boards. It makes the point that we are required to forgive
if the offender repents and asks for forgiveness. Seeing this was a load off my back, as blame has been heaped on my unendingly for my supposed inability to forgive (there are other issues in our marriage, too, including ones similar to some that MyPhilomena described). I am doing my best to be forgiving, but neither my husband nor the other person in question think they’ve done anything wrong, and have certainly not asked for forgiveness.
So, I feel better knowing this is not going to be held entirely against me (by God), but it does still leave me looking for a way to cope with the feelings of anger.
I am going to al-anon, and the readings, I think, would be helpful for anyone. I am also working on getting back to my own interests, and making sure I keep myself busy. I try to pray for others, and particularly for the people in question. I have to agree, it’s a process. Keep at it, and don’t be too hard on yourself, or let anyone else be.