I don't know if I can explain it. It is a thing that seems to be completely foreign to women. Women seem to be very big on, at least, staying friends with guys they can't have, or who have broken up with them. They want to stay in close contact even if the guy is totally disinterested.
If I'm intensely interested in a woman, not being able to have her is torture. Imagine being famished and being invited to sit in presence of a fabulous meal you can't eat. The host of this meal seems inexplicably indifferent to the fact the sight and smell of this meal are driving you crazy, and seems to think you should be perfectly content to just look and smell.
This is a horrible situation: you being famished, and the host of the meal seeming not to get something so basic. Not only are you hungry, but you feel completely psychologically depersonalized. You would clearly be better off if the person hated you and wanted nothing to do with you in the future. Out of sight, out of mind. You need complete cold turkey to recover.
Women, for some reason I can't fathom, seem to decide it's preferable to stay friends with guys they're insane about who've rejected them romantically. I don't understand how they ever recover. In fact, it looks to me like they don't recover.
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