They'd nearly reached the diner when Dean realized he still didn't know the guy's name. Not one to beat around the bush, he asked him.
The guy looked morose, or maybe just shifty, in the moment before he replied "Luce Arch."
"Oh!" Dean blinked, surprised to recognize the name. Or part of it, at least. Luce's eyebrows pulled down, in a way surprisingly similar to Sammy's when he was gearing up for a sulk. "Are you related to Gabriel?"
For the second time since they'd met, Luce looked blindsided. Dean suppressed a snicker. "Uh, yeah. He's my little brother."
"Cool. He's my chemistry partner. This the place?" Dean motioned to the shiny new restaurant on the left. At Luce's nod, he pulled in, careful to take up two spaces. It might make him an asshole, but it sure as hell was better than being responsible for the beating he'd lay down on anyone who scratched his car. He'd've roped off the area around the Impala if he could get away with it.
Dean had just turned off the engine when he looked up to find Luce staring at him. "What?"
"You've never heard my name from anywhere else?" Luce raised an eyebrow at him, arrogant and incredulous all in one.
"I don't do gossip." Dean raised an eyebrow right back at him. They sat there for a minute, before Luce huffed and broke eye contact, a smile fighting its way onto his face.
"It figures, I guess. It's nice to meet you, Dean Winchester." He held out his hand. Dean shook it, bemused but not really put off. So his passenger was a weirdo. What else was new? "Nice to meet you too, Luce."