I really think you are over reacting in this situation. I wouldnt be impressed that the chick did that especially if shes not talking to me on facebook and befriending us both. But if he's not responding and not doing anything you cant give him crap about it. Even if he didnt tell you about the stupid poke thing he probably just didnt think it was that big of deal and left it. If he repsonds to her and never told you that they are actually talking then I would wonder but he's really not doing anything wrong.