Men r from Mars...?

Okay, so my bf and I broke up about 3 weeks ago...i dumped him via text msg...i drunk dialed him 1 week ago and he hung up on me...then a few days ago, he called me out the blue and started talking like nothing was wrong...it was like we had never broken up (although he did NOT mention us getting back together but he kept acting like we still were together). Anyways, guess I'm wondering if I should continue talking to him. We are exes. But I do still have feelings...btw, my ex is an emotionally unbalanced Gemini HAHA