Are you sure you’re not thinking of Rock Hudson?
Cary Grant was in a long-term cohabiting relationship with Randolph Scott, although he later married Dyan Cannon and fathered a child, and then was married to another woman until his death.
I read his biography. Like so many successful actors, he had a traumatic childhood. Among other things, his father had his mother committed to an insane asylum and told young Archie that she had died.
Nope. Cary Grant. He and Randolph Scott.Cary Grant lived with openly gay set and costume designer Orry-Kelly a few years before he and Randolf became lovers. Mr Blackwell, the notorious fashion critic, lived with Cary and Randolph for several months ...