Found: Arthur/Eames, salad
So, Arthur and Eames are working a job together (seperate from the Inception job) and there's this one man on the team who keeps on staring at Arthur. When the team gets take out for lunch (or something like that, it was Italian, by the way), Arthur orders a salad. The guy overhears this and thinks that Arthur is gay because he ordered a salad. Said guy then basically attacks Arthur in his hotel room (after following him creepily for a bit), because it turns out that Arthur looks kind of like his ex. Eames interrupts the guy and Arthur before anything bad can happen. Fic ends up being Arthur/Eames, of course. I think I read this on AO3 possibly. Thank you!