You don't have to force yourself to 'man up', if you can't find other ways to cope in the shorter term. Rehashing might be something to think about a little longer down the line, when you have some perspective.
Have to? Absolutely not. But I've saved myself a lot of misery by convincing myself to just drop it and not re-examine the situation again today. I'd just feel like shit for no reason. I'm actually in a pretty good mood right now, but if I hadn't just moved on earlier, I would have gone to a friend, had the exact same conversation I had the night of the break-up, and the wound would be raw again. Instead, I got some cooking done and played a video game, and I'm kinda cheerful right now.
And maybe rehashing will be useful down the line (though I doubt it), but that just goes back to my point that right now there's nothing to gain by doing anything than straightening up and moving on.
edited 19th Jun '12 5:29:59 PM by Vericrat