I would proceed carefully and slowly, forget the that TTATT part, are you DF'd or just faded? I would start this way , apologize implicitly for ignoring him. Without making it about "The Truth" make it about being a good person. Doing the right thing, nothing about JW's. Repair the friendship.
Once you get there you guys can start easing into some discussions, I've been there and was successful. Just be a friend. And be a good person, he will see you stand out from the JW @$$Holes