Dang, I don't think you've ever grilled me like this!
I'd honestly say it's 50% genuine friendliness, 50% sexual attraction. We've lived in different states and still kept in contact for the last 9 years, so there's no way that could have happened if we didn't care for eacthother as friends first and foremost. But, that being said, I think part of the reason we've both made the effort to stay in touch is because we've both always wanted something a little more.
It's hard to explain...