Most Helpful Guy
How much you talk to your ex really depends on what you are trying to do.
1. If you are trying to get back together, and the other person may want to as well, then you probably will be talking with your ex.
2. If you are trying to move on, its best to not be in touch at all so that you can find closure, focus your energy on the other people and things going on in your life, etc. Then, down the road, you may reconnect (say over the phone every so often) because you once cared for the other person and you are interested in how they are doing.
In your situation, he is looking for excuses to talk to you. The only question is: do you want to get back together? Once you know that, then you'll know what to do.
Dating Advice for the 21st Century: link0THIS IS NOT RELEVANT ANYMORE