HiC, stay strong. I wouldn't call him out on it. You are the better woman and you have to let him know that you are by not taking any action by bringing it up. It will just show insecurities on your part. It will probably cause a fight.
I have similar problems. My W got rid of me as a friend on MySpace yesterday. I have no idea why she would do that. Now today, she wants me to get her off our cell phone plan so she can have her own. She says it's because we are getting a divorce and things are going to have to be separated. The only reason I see doing either one is so I can't see who she's talking to on MySpace or on her phone. I too want to confront her; but I don't see any good that would do. I just keep LRT and 180 while praying for God to give me more patience. I will pray for you to be able to do the same.
"If only they could see our hurt and love, things would be so much different."