Dean was taken aback by her sudden change. The shift of her features. The changing of her eyes. The fangs. When she looked back he smoothed a hand over her cheek. "Still not scary." He said firmly. Not when the vampires of his world had rows and rows of needle sharp teeth. Teeth that would put a shark to shame.
When her fingers brushed over him, teasing his stiff nearly to the point of throbbing member, he groaned deep. Muffled only by her lips. He didn't want to stop her, even though he knew he should. Not yet. No he wanted this. Almost as much as he knew he shouldn't.
Growling softly when Katherine yanked his head back. His hips bucked up slightly as her fangs skimmed over his throat. Dean wanted to throw caution to the wind. To tell her to do it. Dare her to it. But no, not yet. His fingers tightened in her hair once she was kissing him again. Those on her backside eased down farther, between her thighs. Lightly teasing her from behind.