You were Crowley's servant - his personal assistant. Dean and Sam caught wind of this and decided to capture you, thinking you were a demon. Except... you weren't. You were fully human, but the brothers don't know this.

They had weapons - guns, holy water, flamethrowers, etc. all lined up against the wall. They'd get you to talk, one way or another.

You can sense anger in the brothers' eyes as they look at you, but something else as well... lust.