“I hung out with a bad crowd,” he admitted. It was easier, and more truthful, than simply saying he fell. Because he didn't so much fall, really, as just kind of moved in the Downstairs direction. A hop, a skip... a saunter, if you will.
She was only half-demon. Crowley couldn't even begin to fathom how that worked. As far as he knew, demons couldn't reproduce sexually. They were... ill equipped for even the act of intercourse, let alone being equipped for that sort of reproduction. Sure, if he really focused, he could conjure up the necessary parts. But that didn't meant they exactly functioned in the intended way human parts did. Then again, she was half something else as well. She didn't specify human. So maybe reproduction wasn't done through intercourse at all and...
He was giving this far too much thought.
Crowley interrupted his train of thought by extending a hand to the young half-demon. “Crowley,” he said, introducing himself properly.