I can't edit anymore but I was still thinking about this and thought my previous post was kind of harsh. I wanted to add
ETA: When I realized how much time I was thinking about him I was actually way mad...at myself. What the heck!?! I kicked him out of my life for a reason - he was sucking me dry in every way imaginable. I needed to kick him out of my head too or I wasn't really getting anywhere. I do think it is normal to think a lot about a person you spent 16yrs with but there is thinking about once in awhile and obsessiing. I think I was obsessing a little bit. Not about what he was doing currently but just about the situation ya know? It was a relief to move past that.