Unlike her, Spike was entirely comfortable with being a monster. He lived and associated with them so often. Many of the people in Wolfram and Hart were demons themselves. A girl with absorbing powers merely meant he had to be casually cautious. That's all it was to him. A slight inconvenience, like not being able to go out into the sun. The sort of thing you made do over.

"Well, you've gone and got it out of the way already. Good on you."