What do think any advice?

Between 7-12 years ago, this guy I always admired ( we were both single parents and put are kids first), and are kids went to the same school. We frequented the same places festivals, a local bar where we both new a married couple that played in a band there,and we had some of the same acquaintances. People always told us we made a cute pair and had a lot in common, we did flirt a lot and I know we both liked each other but we both put are kids first. A few weeks ago I was at the store looking on a shelf trying to figure out what I was gonna get for this bbq I was going to. I turned around and he was standing there and said Hi and remembered my name which surprised me a little, I figured he would have forgot by now. Of course he is so gorgeous still I was in awww, we talked about are kids, we both have one in college,,and both have one at home still that should be in college, but mine works and pays rent, his is kind of lazy, but work, he was telling me more about that one and I was giving him advice. We talked about are kids for awhile and were in peoples way, finally he said the next time he sees me we would talk more and give me a update on his son at home. Then we went on are way, am I stupid I feel like I should have said when will that be or at least exchanged email or phone numbers, I was so surprised to see him I wasn't thinking quick enough, What do you think?