An Early Frost (1985)

Successful lawyer Michael Pierson is gay, but he has always hidden this part of his life from his mother, Katherine, father, Nick, and grandmother Beatrice. But when Michael discovers he has AIDS and is dying of complications from the disease, he must open up to his parents and the rest of his family. Though fearful of their reactions, he introduces them to his longtime lover, Peter, and looks to them for support.