Dean: A long time ago I had a relationship with a mortal woman. Her name was Lisa and she had a young son. Lisa invited me into her home and her family. It was easy living with them. For a while. 

But I was hiding in their comfortable, loving home, pretending to be someone I’m not. The times were less peaceful then and without me the lands became unstable and dangerous… Also for Lisa and Ben. It pained me, but I had to leave them. 

I know they found happiness and that is all that matters.