Dang Cram, sounds pretty good. Just don't over think it. You've talked about not wanting a serious relationship, but it seems like you're doing good. It looks like a textbook case of letting something happen naturally, and not forcing it into a specific box. Roll with it. Wherever it goes, as long as you're into it, it doesn't matter what label you put on it.
As for "honesty", I think it depends on what that truth is. There's that joke about women holding back their crazy early on in a relationship. Apparently, guys are crazy too lol. Who knew? Theres being honest, and then there's offering up too much honesty. Some people are just turned off by certain things. Oh well.