I still talk to all my ex's, and have had post-relationship sex as well. It's odd, but they always become much more honest and willing to talk after I leave them. Also, now that they're not getting any on a regular basis, I suddenly become a goddess again (in their eyes), and the love-making is way more fabulous than it ever was while we were together. I don't know why I've seen this pattern over and over, but it always seems to happen. BTW, Two of these relationships were over 3 years in time, one I was married to. I also still talk to their families, they still talk to mine, and I get Christmas cards and birthday phone calls from my former in laws. Weird, but I guess I'm a fairly amiable person, as are the men I end up with.