I remember this movie where a girl (i think her hair was dark) is found by this man, it might have been Scarlett Johansson.

I think she was homeless or she didn’t have a place to stay, and this man lets her seep at his house for a night (maybe it was christmas eve, anyway it was winter), than they become more and more close, and he helps her find out things about her family, and they also travel back in time or something like that. The only scene I remember clearly is a scene where they are in a car together, it is really cold outside.

Please help me!!!