"I do know him, yeah. We go way back like you know, few weeks. I threw salt at him." In retrospect it was a pretty funny story. Dean seemed to be really good at making friends through confrontation. Then again, Dean had never really had friends before either. Not ones that weren't hunters, too.
Maybe this was the only way he knew how.
"He's the one who told me about you, which is why I'm here. Guess trying to salt him didn't ruin our chances of friendship."