He is a Vampire. I am the Slayer. I know what I have to do. It's not revenge, it's my job. He is just an undead corpse, one who has killed thousands of people, and a soul doesn't make any difference.

I should have killed him when I met him in that ally, when I first came to Sunnydale, or a thousand other times after that.

But Mrs. Post was right. I was blinded by love. Like Faith is now. And if she gets in my way, I'll kill her too.

I'm the Slayer, she shouldn't have been chosen, and he is a Vampire.

The answer is simple.