[Though treating it like it was just something they had to do felt a little cold. He wanted to enjoy this. It should be enjoyed even if it was a pain in the ass. Even if they did have significant others in their lives. What harm was one kiss? One chance in a life time? It didn't have to mean anything but it didn't have to be a chore.
So he watched, stepping closer to give her a hand if she needed it, if only for support. As she made herself comfortable he waited, then he stepped in to stand between her thighs, one hand going to her hip as he did his best to behave. She was...tempting, he couldn't deny that. She was beautiful and flirtatious, but she was with Spike and he was with Buffy and he didn't want to ruin any of that.
Just a kiss.
He leaned in, hand coming up to gently cup her face and brush some of her hair back. He closed his eyes and pressed his mouth to hers, kissing her softly at first.]