Maybe I'm just really jaded because it has happened to me and I've seen it happen on two other occassions in my own family. People who are seeing some one on the sly rarely fess up upon first confrontation. Perhaps it's because they don't really know where they stand with the other person yet. Like everyone else on the boards, I hate to see you getting hurt. Just keep your eyes open.
Let me also say that I believe it is your business who he is talking to at 3 AM for 45 minutes! You are still married and if he has any intentions of working on the relationship with you, he needs to be completely transparent. People who are being secretive usually have a reason for doing so.
Oh Shannon, we're all so sorry and we're rooting for you and Kayleigh.