I know that the sex issue became a "wedge" for my W and I. She'd push and I'd pull back. I don't think either of us realized it. I did feel pressured --- it was like I was always being told I had to initiate it, it was no longer "my" decision. There were times, when I did try to start something, she would say that it was too late at night. Or could we wait until the morning?
I do know that I didn't initiate nearly as much as I should have.