Why is he contacting me?

He probably is using u to get back at the other girl. Also most men will want more if u dont give them want they want. I have been in the same situation u do some "stuff" and then when u dont wanna move forward they get pissy and stop talking to u, move on and when he gets sick of her will use u to fall back on. My suggestion to u is to ignore him and just delet him off everything. Even better. Block him off ur phone of whatever