Klaus is not pulling away either, but he's certainly sliding out of her, through no fault of his own. It's all biology. He makes a briefly annoyed face when it happens, but she's there, touching him, kissing him, and it can't be anything but brief.

Except her words make him frown again, and he leans back, but doesn't pull back, just enough to catch her gaze. "Did you think I wanted you to?"