Does he want to be with me or his wife?

I met this guy through work, he is a customer at my job and we always talk and flirt when he comes in, well about two months ago I got up the courage to just give him my number, he called the next day and we talked for hours..after that he would call about 2 or 3 times a week and we would chat and flirt on the phone..then during one phone conversation he told me that his ex had contacted him and wanted to get back together and he was not sure what to do and he was dealing with some unfinished business and sorting out his emotions, he apologized if it seemed like he was moving slow and it had nothing to do with me he really likes me and what not…

After that I did not hear from him as much, then for the past two weeks he has called me every single night and we talk for at least two hours, we flirt back and forth and he was teaching me about baseball which is a passion of his…he even called me over the weekend while he was away with his daughter for a sport tournament…is this a good sign that he might be over his ex and is wanting to pursue something with me? Does it sound like he wants to be more then friends? How can I confront him on this without seeming to pushy as I do not want to scare him away?