A: Well...who the hell is he "talking" to? and what does talking mean to him? If he was only talking to the girl then that wouldn't be a problem for him to date you. Ask him to give you a straight answer, and if he doesn't, move on.
A: Wow that's hard. I really don't know. Give him time, I guess. But time for what? Maybe he is questioning himself if it's going to be the same as before. Tell that you are hurting.