Brooke is dating Dean but he starts Актёрское искусство violently and she asks him for time. Then she meets Sam and they start dating, everything is easier with him but Dean's ghost still hunting her. video by link
"I looked into your eyes and saw; a world that does not exist." When Dean goes back in time to try to save the ones he loves time warps and he finds himself in an alternate universe. (ala the бабочка effect).