Why he'd never actually been with a vampire before now, Crowley did not know. Then again, maybe having Kol as the first made it that much more impressive. And Crowley couldn't deny, he found the sight of Kol with the fangs out, eyes lined with veins, so very sexy.
The sharp sting of the bite made Crowley shudder slightly, with a groan of satisfaction, relishing in the head rush he always got from the experience. He wondered, briefly, how his blood tasted compared to a humans. Also if his would be as addictive to Kol as Ruby's had been to Sam. Either way, he let his own bite deepen slightly, teeth just breaking the skin and a few drops of Kol's blood well up to the surface, before Crowley's tongue flicked them away. The sweetest blood he'd ever tasted. His grip on Kol's hair loosened a bit, caressing more than tugging as he leaned more over Kol, relaxing and pressing against him, more than happy to chase away the dreams with blood instead.