It wasn't supposed to happen like this. In an old crypt, waiting for Buffy, unable to see anything. Not to mention with a mass murdering master vampire, of all people.
Your first kiss should be sweet and romantic, maybe at the movies or when your boyfriend is saying goodnight. Preferably with Xander. Not when some sexy-as-sin vampire corners you in a graveyard, saying how he couldn't get you out of his head since he saw you on Halloween and he has to have you. It's supposed to be special, with someone who actually cares about you, not someone who really shouldn't be making you feel like this, all tingly inside, throwing caution out the window as you wrap your arms around his neck and press you body into him.
It's just wrong, and did he ever think that maybe you didn't want him to make you feel so good?