Spike: Uh, I do remember what I said. The promise… to protect her. If I’d done that, even if I didn’t make it, you wouldn’t have had to jump. But I want you to know, I did save you. Not when it counted, of course, but after that. Every night after that. I can see it all again. I’d do something different… move faster, more clever, you know? Dozens of times, lots of different ways. Every night I save you.
Buffy, 6x03 “After Life”
BUFFY: The weapons are in the chest by the TV, I’ll grab the stuff upstairs.
SPIKE: Uh, Buffy…
SPIKE: If you wanna just hand them over the threshold, I’ll…
BUFFY: Come in, Spike.
SPIKE: Hmm. Presto. No barrier.
Um, won’t bother with the small stuff. Couple of good axes should hold off Glory’s mates while you take on the lady herself.
BUFFY: We’re not all gonna make it. You know that.
SPIKE: Yeah. Hey. Always knew I’d go down fightin’.
BUFFY: I’m counting on you … to protect her.
SPIKE: Till the end of the world. Even if that happens to be tonight.
BUFFY: I’ll be a minute.
SPIKE: Yeah. I know you’ll never love me. I know that I’m a monster. But you treat me like a man. And that’s… Get your stuff, I’ll be here.