As you know, meeting in person is totally different from chatting online. Online "dating" is a good way to get to know them, but they can be whoever they want to be, and so can you. I would suggest just keeping it on a friendship level until you meet in person. How would you react if he kept asking you "would you really date me" or appearing needy or pushy?
Why not just meet him without expectations and go from there? You might be wildly attracted to each other or might be repelled. Any good relationship should start with friendship first. Don't expect anything and you won't be disappointed.
I hope you get to meet him and just have a fun time.