Can you be gone when he gets home? Maybe even an overnight somewhere?
And when you do see him, say nothing. Like you didn't even notice he was gone.
You seem to be getting close to the end of your rope.
What sort of boundary do you think you could establish about this? You know you can't stop him from staying out, so what sort of natural consequences can you put in place for this behavior? Or, do you envision a simple "H, I find it unacceptable for you to stay out all night." kind of thing?
I think, you need to make some kind of change. Isn't there a MWD post somewhere about doing "something" different if one isn't getting the preferred, or any, response? IDK, but I sense that if something doesn't change for you that you may "crack" just a bit
Hoping a sage will stop by with guidance for you.
Me 46 H 56 M 22 yrs S22, D20, Twin Ss18
You teach people how to treat you by what you allow. What you stop. And what you reinforce. ~~~~~~~ A lack of boundaries invites a lack of respect.