I am in North Florida. Good to not be there. That's GALing and being mysterious. He seemed to wonder where you were as he did text you goond night. Good stuff.
OW. Lots of people don't realize the emotional attachment is an affair. They hear "affair" and think of that in a physical way otherwise, it's ok. It's ok to talk to someone. Yes and no. When that person is draining you so you have no more "talk" for your spouse, that's cheating on your spouse.
Him moving out because you posted something on his FB...pretty big sign he's got something going or has his eye on someone.