In my FB friend list, I have one ex-husband, 4 ex-boyfriends, and a dude I was a penpal with after meeting up in Park City skiing when I was 16 or so. I didn't request any of them, they found me, but, I don't have any animosity toward them either. Shoot, all the boyfriends were in Jr high and High School, and my ex and I divorced in 96, and still end up in the same social circle. I know, I am wierd.
I'm kind of the same way, except I have a bunch of ex-girlfriends (mostly college) who are my friends. No animosity, just a place to read about what's going on in our lives, if anything.
I was also able to reconnect with a bunch of high school friends, which has been a total hoot. I even started dating one.

We get together every so often, last weekend was the most recent gathering. One of the gals (who is now a doctor) said to us after she had a few cocktails the other night that she's so happy that we've all gotten to know each other. Because in our little group, we all weren't close friends in high school. It has been an interesting experience. I've only been on since January or February of this year.
I can understand being wary of the stalker-ish types, Hawkgirl. I blocked one ex-girlfriend, because I was afraid she'd start semi-stalking me again. It is partially why I still post as invisible both here and at CU, because she used to check and see if I was on-line, then pound on my door a few minutes later.

I don't think it is a curse, it can be whatever you want it to be. You can reveal as much or as little as you like, just like the Cave.