[Sam frowns, he could technically take him down with ease, just shift into a fly and slip down his throat while he's gaping at his disappearing act, then transform back inside of him. It'd be messy and something he really, really doesn't want to do. Spike seems like a Vamp he'd rather have as a friend but he also doesn't want him to kill Buffy either.
He'd rather defend her if it came down to it than just kill the vamp right here to ensure it.]
I'm not lookin' for a fight Spike. [Calm, even, he's just trying to talk to him.]