The Best Man
Starring Henry Fonda, Cliff Robertson, Edie Adams, Margaret Leighton, Shelley Berman, Lee Tracy, Ann Sothern, Gene Raymond, Kevin McCarthy, Mahalia Jackson
It's a comedy and drama movie, and has a rating of 7.6 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Italy.