I’ve heard things like “When a guy’s relationship ends, he replaces her.
When a woman’s relationship ends, she mourns,” or “He’s just hooking up with such-and-such to spite the ex-girlfriend,” or “Guys just don’t care” and other nonsense.
That is to say, he seeks his feeling of validation and worth from how a woman treats him.
It’s not uncommon for people, men or women, to derive their sense of well-being, self-worth, and self-esteem from how other people treat them.
For people that haven’t yet fully realized that all of us need to be emotionally responsible (which is most people), this is where much of the pain of the breakup originates from (they blame themselves for not “measuring up”…