It's not pathetic at all. It affects you therefore it's significant.
Thank you for sharing. It means a lot and I knew there was a lot on your mind.
It's a lot to go through when the person you love has children with a previous partner. The children will always come first, whatever the relationship with the partner is like. I think J is just trying to do that. Put his children first. Unfortunately Cruella is going to be in that picture too. I know it hurts, but I know you have the strength to overcome the hurt and push through.
Keep talking, keep telling us how hard and ty, and difficult it is. But know that you have it in you to be the better person.