My daughter is just in her 50s and has done both chat forums, where others have very similar interests to her, and also dating sites. The dating sites are what you make of them. It would be rare to find that ideal romance immediately, if ever.
This past year has been difficult emotionally for many. Many have lost the face to face contact they had through work and turned to chat forums.
I'm assuming you have both talked about relationships. You are having doubts about him now. If you don't like the way the chats have gone/not gone, then do as the others have suggested, forget him and move on.