I'd definitely mention that your nervous and you'd appreciate time and patience. I think once you've really really gotten comfortable with this guy you will kiss him no problem, it just all very new. If he cannot wait for you, then let him go. I wouldn't mention the issue till, again, I was very comfortable with him and felt I knew him enough to trust my secret. You'll know when the time is right for both. Don't get to nervous, just expect patience and respect in that aspect.