I had quite a lot and even though they now shun me I still view the friendship we had at the time as real. Friendships can wax and wane, even close ones, and even the closest of non JW friendships can breakdown or drift apart. It's the sudden stopping that marks these losses as different and painful. I've regained friendship with those that left ahead of me, and picked up with those that left after me and feel sorry for those half a dozen or so really decent eggs that I met who are still trapped in a high control group.
But I'll freely admit that I'm in a fairly forgiving stage in my life. It might pass!