It´s everything.

For a kiss to be really good, you want it to mean something. You want it to be with someone you can't get out of your head, so that when your lips finally touch you feel it everywhere. A kiss so hot and so deep you never want to come up for air. You can't cheat your first kiss. Trust me, you don't want to. Cause when you find that right person for a first kiss, it's everything.

From Grey´s Anatomy.