Lately, my best friend stopped talking to me. I usually chat him every time I'm on and he's just become very boring lately, with one word answers, etc, and he hasn't been online much. I want to know if there's a way I can see if he has me on an offline list. I've tried watching his actions, but he never messes with applications, and he never comments on statuses, likes them, or posts them. I'm out of ideas.