Thought I would give a female's perspective about the withholding of sex as punishment issue. My M was a SSM. I felt that xh was never there for me and xh was angry that I wasn't eager to jump into bed with him.
On hindsight, I realised what he meant when he said he felt diminished and rejected by my lack of interest in the bedroom.
On the other hand, I was also rejected and diminished by his inability to give me emotional support. I was not withholding sex as a punishment. I just couldn't do it because I needed to feel that emotional attachment. I felt like a piece of furniture to him and that sure didn't make me feel sexy.
I don't know the exact dynamics btw the 2 of you but to break the impasse, someone has to make the first move.
You can call me Dory/ Grl.
As a wise fish once sang,"Just keep swimming!"
It's no use to go back to yesterday because I was a different person then.