I just don't know what to say to him when he calls. I find myself biting my tongue all the time.

This morning he called me and asked me if I had met anyone yet...WTF? I wanted to say, NO I haven't met anyone! I am still married. Then he said "just because we aren't together, doesn't mean I don't want you to be happy" What do I say to that? I wanted to say, "if you want to make me happy, then don't call me anymore." Everytime I talk to him he puts me in a bad mood.