Rose was walking around places trying to find her dad, Dean Winchester because her mom died after telling her to find Dean. Now Dean is the crazy one of them and does not know that he has a daughter but finds her when she is drunk and hitting on Cass Dean's and Sam's Angel friend. He looked uncomfortable and awkward that she was trying to get in his pants but then later Dean's finds out he has a daughter but can't find her and she is half demon and half angel. That was when it got crazy. Cass had a thing for her and Dean didn't know that but they like each other trying to go out with each other but not making it obvious that they liked each other.