Move Over, Darling is a remake of  the 1940 movie, My Favorite Wife.  The 1940 version starred Irene Dunne, Cary Grant and Randolf Scott.  The 1963 movie starred also Doris Day, James Garner, Polly Bergen, Thelma Ritter, Edgar Buchanan, Don Knotts, and John Astin.

It is the story of a lawyer (James Garner) whose wife (Doris Day) disappeared into the sea after a plane crash.  Five years have passed and he has just had her declared dead and plans to marry again (Polly Bergen is his intended.) Doris is rescued by the U.S. Navy from the island she has been marooned on.  She tries to contact her husband, but he has just left on his honeymoon.  With his mother's help, she follows him to his honeymoon hotel where, needless to say, he shocked to see that she is alive.  There is the problem of his new wife.  He finds out, however, that Doris wasn't alone on that island.  Chuck's character was her companion for those five years. 

Chuck plays a overly confident man, very used to feminine attention and he's definitely interested in Doris.  James Garner's character is very jealous and is suspicious that those years on the island couldn't have been platonic.  His fantasies of what could have happened on the island are very funny scenes.