Dean Winchester. That man had killed probably hundreds of monsters by the time he met you. He thought you were just another one who fell head over heels for him at first sight. That was until you revealed your secret.

So now you sat there, in that cheap motel on the edge of one of the two beds. Sam was out to get some things, while Dean was standing in front of you, an angel blade in his hand. You didn't look like a Monster. And exactly that was the Problem.

You looked… human. Almost too human. Just slightly longer nails catching the light. No scales, no fins, no gills. Nothing to suggest what you were capable of. That was the problem. As soon as you're in a body of water it always happened, the same routine: The legs changed into a fishtail, ripping through the skin of the legs as the skin around the sides and breasts was peeled off, replaced by scales. The fingers got webbed, claws pushing the normal nails out as your teeth fell out, one by one replaced by shark like, razor sharp teeth, gills forming on the sides of your neck and torso. Your ears were webbed, a spiky, dorsal fin pushing through the skin on your spine, pupils distorting into horizontal slits.

You: "Careful with that. You're Holding it too loosely. You're gonna hurt yourself."

Dean scoffed, changing subject

Dean: "I've seen the bodies in the lake."