As filming season 16 is coming up, Shonda finally tells everyone what the season is based off. A "What if" season. Old actors are coming back. Including Patrick Dempsey, A few years back after season 11 ended, Patrick and Ellen got into a big fight and he left. Not showing his face on the set of Greys Anatomy again. So of course Ellen doesn't want anything to do with him. but maybe love over powers hate. *mature*