How long do men need after a divorce to be ready for commitment versus a rebound?

I have been fortunate to date quite a bit in the three years since my divorce. My experience has been that most of the time it is the women who have inititated the divorce and the women who wait longer to get into a serious relationship, allowing them time to get the proper support and truly heal. This has been my experience, I’m not saying this is all divorced men and women.
The man I am currently very interested in as far as a potential boyfriend has only been divorced 7 months. He says he was separated 18 months beforehand and they no longer had sex at that point. Also that his ex wife was dating and he was not. Apparently his son had recently suggested he find someone who makes him happy.
My question is, to divorced men especially, looking back…how long did it take you to truly get over your ex, whether you initiated or not, and how long before you had a true, healthy relationship with a new woman.
I have read in a few books it is one year at the least, of course depending on the length of the marriage.
I’m not interested in needing a boyfriend and certainly never want to be anyone’s rebound girlfriend, as I seem to see happen all the time.

My ex husband, at exactly a year, got into a serious relationship with his neighbor, and I am happy for him, although I know he will never marry her, as it appears he is using her for sexual and emotional support.

If my new interest has been divorced 7 months, can he even get serious or should I take it very very slow until about a year.