I only remember the ending ..the main character is a handsome rich man who see his girlfriend or wife who’s either blonde, ginger or some kind of very light brunette all the time although she’s either dead or imaginary and in the end he decides to say goodbye to her in a dramatic scene where she walks to the window until she disappears gradually and he’s crying with his father i think and maybe his mother or sister I really don’t know but they hug him and cry

I think it was in the time between 2005 and 2015 maybe till 2017 It’s american or British and that’s all I know ..