Well, hmm. This one is tough. I can be remarkably good at letting go. I surprise myself sometimes. And pretty much every one I associate myself with is on my own terms these days. I don't run in a social "pack" anymore, I don't have a work group of acquaintances that I am obligated to hang out with. I pretty much spend time with the small handful of people I choose to spend time with, and most of them (here I am thinking about Amy and Susan) are pretty darn awesome.
I might come back to this post and edit it if someone springs to mind, but so far... nope.
(Was that artful dodgery? Because if you would have asked me this question 5 months ago, the answer would have been much, much different.)