Do you think movie stars keep in touch after working on a movie set together?

Well of course some of them do and some just hate each other. I keep in touch with other ex co workers and not with others. It's the same thing. I know Harrison Ford keeps in touch with George Lucas and Spielberg. Does Tom Cruise stay in touch with Kelly McGillis or Anthony Edwards? Does Matthew Broderick stay in touch with Mia Sara or Ben Stein? hehehehe