Tea and Sympathy
I hadn't heard of it until a couple days ago and watched it tonight. It really turned about to be a hidden gem for me. Deborah Kerr was wonderful and it was exquisitely shot. Surprised it could get made in the 50's with the sexual ambiguity/homosexual undertones and cavalier treatment of adultery.
I gave it a 10/10 because it really just shattered me emotionally, but it's really exactly my kind of thing so other people wouldn't like it as much. Love those restrained, repressed, old fashioned romantic dramas.