Long story short, after 25+ years together (& 2 pretty grown up kids), in 2023 we split as he couldn't cope with the thought I'd been unfaithful (now nearly 20 years ago).
We've remained really close, in fact so much so it gets in the way of either of us really seeing or dating anyone else. I would love the thought of us getting back together, except there literally isn't a day goes by that he doesn't mention my infidelity one way or another, sometimes emotionally, sometimes just in passing or in a matter of fact way. I know he's obviously thinking about it a lot, but it's utterly draining.
AIBU to think it's time for him to let go of it and move on for both our sakes?