Thing is you already voiced your interest. In my opinion, you don't have to do anymore. Maybe I am wrong, but it sounds like he may be playing games. He may not be doing it intentionally, but this isn't healthy for you because you really like him and he's sending mixed signals. Leave it in the hands of the Lord.
You can be nice and courteous and chat, but don't obsess over it.
Another option would be to approach him about it. You can tell him that he's sending mixed signals and it is confusing you and if he isn't interested in dating, to stop.
I personally would do no more and just live your life. In my opinion, you did enough.
Beyond a revelation from God, none of us knows his intent. The dreams may be of God or not, but don't go just on dreams. If from God He will bring clarity, not confusion.