As I knew it would, the pain is slipping away. I had a day a couple weeks ago when I was watching a movie and had a spontaneous thought of "I am getting over Mark." I had to put that on the calendar so I could see my progress. Just last week, I was heading to my friends house and got there before I realized I had passed the exit I had taken for the last 6 years with Mark. That was pretty huge.
I still don't think I can move on to someone else, but at least I am no longer pining over the loss of him. Baby steps.