You could be the beauty, and he would be the monster...

You had always been sweet.... caring. But you were also a hunter, and you were good at what you did. You had seen the bad, but you did your best to remain loving and caring.

And something about that made you perfect in Sam's eyes. So perfect, in fact, that even when he lost his soul and emotion, he still had this obsessive, powerful need for you

You were his beauty. His perfection. His angel...

So, one night, when Dean was out and Sam and you were alone... he just couldn't keep his eyes off of you... he felt this intense need to protect you from all the bad in the world...