He has recently, only once, mentioned what a dark time it was. So there was one mention. Other than that he has been playful and happy - no evidence of hurt feelings.

On my end, I wanted to see if he even wants to talk about it. So in my draft I am saying that I realize that he does not owe me anything, including listening to my words of remorse, and if he does not like the subject he can just skip replying and I will understand.

But I see that I can simply wait.

I am presently engaged in a conversation with him about how one of my cats scratched me badly when I tried to apply the flea treatment. So he does not suspect I have something serious to tell him.