Lost In Confusion

I am a 57 year old closeted gaymale. My partner of 30 years passed away almost 5 years ago. Since then I have disregarded all thoughts of an encounter or relationship. 3 weeks ago, while at the Public Library, I met a closeted 30 year old young man.We developed a casual friendship. We seemed to be doing fine and met several times within the next few weeks, sometimes at my insistence and sometime at his. Each time we met, he would nod and smile before saying anything. Today,however, when we met, he seemed nervous and embarrassed and kept his eyes downcast and just smiled whenever I said anything. He wouldn't even look at me or talk.I finally shook his hand and told him I had to go. I feel that something is wrong. Should I approach him again? Or just leave him alone? I can provide more details if necessary.

P.S. We talked today and as it turns out, He has been married for almost 2 years now and has a 2 year old son and a 1 year old daughter. I appreciate his honesty! I wish him the very best that life has to offer! Sometimes not knowing why something happened is the worst thing that can happen.I'm grateful to him for letting me know! Peace Out!