Aka, Argyll vs Argyll in the 50s and early 60s, their divorce was beyond acrimonious, the details of which are played out in their stormy marriage. It's extremely well made and acted with Clare Foy and Paul Bettany at each other's throats most of the time.
Steamy sex there isn't, but it's implicated, not to mention the adultery which in the 50s was a pretty heinous offence.