I’m happy for you.
From what I understood, You already met him for four times, face to face. Am I right?
If so, this can give you a clue of where’s coming from.
It’s not a big deal that his profile has no pic, if you already saw him. Maybe he’s an insecure person or has some kind of complex. As long as you saw him. I don’t see any problem.

Only a thing, I know it’s futile to say a thing as I’m gonna tell you, because I know you are all excited but I have to tell you. Take it little by little. Time will tell you. Try to not being very intense. So he won’t feel uncomfortable.
Consider always that you are very worthy and he has to be up to you. Let’s see what happen. I’m sure there are marvellous guys out there and he can be one of these.