Of course he was using me. At that time I wasn't in the best place so it wasn't all that clear to me then. My H has called me many times for "life issues" since he left. When his dad had surgery, when his mom got sick again, when he had a problem at work and so on. Certainly I wished his dad well in surgery but other than that I stopped listening. We all have life stuff to do deal with and if I was good enough to be his sounding board then I should have been good enough for more. I wasn't so I stopped. Live and learn. It's all you can do.
