You're trying to control the R between your S and H. That won't work. They have to figure it out on their own. I think bringing up H's relationship with his father is guilting him. Those are H's issues to work out, which he may or may not do. Let it alone.
I've had to work on similar issues, my issues, around this. I want to fix-it, to orchestrate it to be the way I want it to be. But the truth is, it's not mine to fix. It belongs to them. If one or the other comes to me for advice or support I'm here but until they ask, anything I interject is busting a boundary.
What scaredsilly says is very true. Do you take H's seeming disinterest in son as a rejection of him and thereby, you? The R with S is another string that keeps H tied to you.
What happens if that string is broken?
How does that make you feel?
Angry? Look deeper.
Anger is just a symptom.
And this does fall in line with the good or nice guy scenariio.
Me 57/H 58 M36 S 2.5yrs R 12/13
Let me give up the need to know why things happen as they do. I will never know and constant wondering is constant suffering. Caroline Myss