Forbidden Fruit (1915)

Ruth Ancaster is about to marry her fiance, Edward, when she discovers that he has been cheating on her with a variety of different women. Angered, she marries Henry, Edward's best friend. Edward sees a chance to take his revenge on both of them when Henry, in financial trouble, forges Edward's name on a stock certificate and is caught. He offers to drop the charges against Henry if Ruth agrees to "pay the price"--and he doesn't mean money.