Sounds like you are doing great and not becoming reactive.
DO NOT fix it for him. DO NOT DO NOT. Trust me, he doesn't want a mommy and you don't want to be his mother.
His ANGER is at himself, even if he directs it toward you. You are doing nothing but treating yourself, and even him, with respect.
If he is trying to communicate something about his status w/OW by playing games with an online profile, either ignore it or, IF YOU MUST, tell him you noticed but that vague, indirect communication isn't working for you. If he has something to tell you, he can tell you directly.
I'm not real sure what was going on here: "I spouted off at the mouth that by me sleeping with him, it made a mockery out of the whole reason why he moved out."
Sounds like you were talking out of hurt OR fishing for repentence on his part. Whatever. I would caution you though NOT TO BACK HIM INTO A CORNER. Don't make it the case that by trying to come back to you he is a spineless hypocrite, for instance.... Don't put up an electric fence if you are trying to leave the door open...
