Just have fun and enjoy getting to know the guy. Don't worry about this kiss or anything after that...pay attention to what he says and figure out if he's the kind of guy that you'd even want to share a kiss with...it's kind of special so make sure he's right for you (not the other way around, let him worry about that)...If you know him well enough and know that he honors and respects you, then I think the kiss will be a natural expression of mutual trust and affection. There is no magic to a kiss...it's particular to each couple, so there really aren't any rules...BTW, I waited to have sex until I was 19 and in college, and I was so comfortable with the guy (because we spent tons of time together as friends) that we were able to laugh together about all of the awkward parts.