I read up on your stitch. If you have kind of been dating a gal, are you focusing 100% on reconcilling? You could probably ask me the same thing, since I sold my ring, but rings are replacable, while emotional issues are hard to repair. I spent an entire day reading the bible about a week after he filed and was given such peace that I have been held above the pain. That is why focusing on myself and my relationship with God is my priority. It's just like Amy said.
That was nice and right of you to go to her grandmother's funeral. My grandmother died a week after he filed and I got an e-mail saying he was sorry. My advise to you would be to focus on yourself by making positive changes in your life and pray that God will work on her.
My H would tell me it was OK to go do things with my friends- he worked A LOT- and I would go, now he's holding all of those times against me.
As far as the affair, that was a long time ago. She could just be using it as a stone to throw at you or there really may be some scars where healing never took place.
The bible study I am doing is about pointing our finger at ourselves and not blaming others. Ultimately, we are all responsible for our own actions and our reactions to others.
So, do enjoy life, but I would caution you not to do anything right now that would jeopardize your reconcilliation or add fuel to the fire, if you really want your M to work.