In his autobiography Cecil B. DeMille did not spend time on Don't Change Your Husband. Except to say that this was his first film with a new discovery Gloria Swanson. He then went on for a couple of pages talking about his friendship over the years with her.
Don't Change Your Husband was one of DeMille's silent comedies with a Victorian moral to every one. Here Swanson is a bored wife married to comfortable and stuffy DeMille regular Elliott Dexter. He barely notices the wife any more, keeping his head buried in the newspaper in the morning. He also has a nasty habit of eating raw onions and that will kill romance like nothing else will.
But he's provided for Swanson well including a nice set of jewelry and even though Dorothy Parker hadn't said it yet, diamonds are a girl's best friend.
One day a real Snidely Whiplash type villain Lew Cody starts putting the moves on Swanson. She divorces Dexter and marries Cody. But Cody just wants her jewels for business and to shower on another and badder girl Julia Faye.
DeMille was a child of the Victorian era and this film ends just about as the title suggests. The title itself really gives it all away.
Julia Faye who was one of DeMille's mistresses appeared in most of his feature films right up to the second Ten Commandments. Another was Jeanie MacPherson who was an actress as well as a screenwriter. She did the script for this and many other DeMille films. Lastly there was Gladys Rosson who was his private secretary and on every set right up to The Greatest Show On Earth. He had a regular harem going, but all these women even after the relationship was over were well taken care of work wise.
In fact Faye has one of the more meatier parts in her career as the other woman in Don't Change Your Husband. If this was sound one can only imagine the dialog between Swanson and Faye.
Don't Change Your Husband was the beginning of a fine collaboration between a great director and great star.