Ahh yes, the talk...well I suggest doing what will put your mind at ease without doing the "needy, pain in the ass" girl thing. I know that can be difficult, but sometimes the talk needs to be had- just do it in a constructive manner for yourself. You just have to be ok with your decision, and be prepared for whatever comes. Remember ultimately relationships are a two person deal, and you don't just have to sit around waiting for him to decide.
I wish it was easier, these can be yucky situations. Again, do what will make you feel more comfortable.
