It's really hard to maintain a friendship with truthers, especially if you absolutely disagree with them. Other people who are not truthers, but are open to the ideas of the conspiracy theories probably have a better chance at friendship. Although, it eventually turns into "wake this person up at any cost," which means nonstop troofer documentaries and constant nagging to assist in a protest or action of some sort. Few, if any, actually go on to become truthers themselves. Most truthers I've known found out for themselves on the Internet (a.k.a. the troof brought us together).
As for me personally, there's really no communication between me and my [former] troofer friends. This is pretty awkward, considering I still live with a couple of them. There's really no personal animosity, as I came forth a few days before my "Letter of Resignation" blog, and basically told them I no longer believed in the cause and would not go on with them. What it really comes down to, I guess, is that without pot and conspiracy theories, we really have nothing in common anymore. And, without the opportunity to "wake me up," I guess there's no point for them to even hang out with me anymore.
