Yes, getting over it is important. Otherwise, you turn into one of those sad people who can't talk about anything but how wounded they feel and tries to involve all of their 'friends' in their outrage.

I've known a few folks like that, and I find it best to avoid them, or at least head off conversations going in that direction. The ones who try to suck others into their fights are the 'emotional vampires' Becca mentioned in the other dumping thread. Get mad and get over it. (I can't remember where I first heard that, but it was good advice.)

Best to let things go, let people deal with their own problems unless they ask for help, and if THEY ask YOU, focus on helping them get past problems, not dwell on them.

What I've learned is to let friends BE friends, and if they can't or won't do that, look at them as good acquaintances. Life's too short for persistently wishing, and too full of good people who don't make you feel foolish. Treasure the true friends.