I get what you are saying. For myself, it's hard. I share kids and a 20 year history with my XAH. So when memories are discussed, he is many times part of those memories, good or bad.
That being said, when I did divorce, I decided I would make new memories to replace the old ones! So my family never sits around, we DO things. We create those memories, and you will too!
Give it time. Your story is going to be a great one!