Anyone even the slightest bit outgoing makes friends quickly at church. After all, you're self selected to be compatible; you believe the same things, or nearly enough. You're there for the same reasons and purposes- that produces an infectious camaraderie, an intimacy.
But it's a false intimacy. You have no idea how huge are the differences that can be masked over by a common ideology or a covenant, how little of the real person is conveyed by a religious identity until there's some decision, some committee vote that makes you say, "That isn't the man I know. That isn't the woman I know. Who are these people who have been so large a part of my life for so many years?" And then you have to decide whether it's possible to fellowship with the real people in the room, rather than the illusions you had been fellowshipping with.
I hope you have no idea what I'm talking about. I hope you never do.