The most you will get out of life is what you ask for.

Talk to him. In person. You either hit it off or you stay as his client. Wouldn't finding the truth of your situation feel better than playing the "what if" game?

You have already decided that he will reject you, so what have you got to lose?

And if he does reject you, so what? It frees you to find the man you are meant to be with.