In my opinion, it's always a good thing to be a little mysterious...people are curious by nature...
Don't divulge too much, too soon.

I don't know how you are when you text, but you seem like a lovely, open person here, and that's great. But it's never a bad thing, in a relationship (or a maybe-relationship) to want the other person to want....

I am, I admit, the last person to give any advice on communication, though