I'm focused on being a good dad for now.
That's the deal in my humble opinion. Beat them at parenting and be a good role model. Eat the pride and put yourself on the back burner. The right thing is the hardest thing. Take a deep breath and eat with the B if it means something to the child and it won't be stressful. It pays off in the long run. Never speak ill of the B in front of the child. The B will probably do it and when the child gets older, he will figure it out.
Glad you're taking a rest. I thought you were a serial marrier for a while there. I know someone like that and it's a very ugly story. He writes country songs, now.