Complex sentence: Valentino reportedly was fascinated by Vilma, and he chose her as the first lady in the films and Ronald Colman in a series of love stories, including "The Dark Angel" and "The Winning of Barbara Worth".
Split into simpler sentences: Valentino reportedly was fascinated by Vilma, and he chose her as the leading lady in the films. She also appeared opposite Ronald Colman in a series of love stories, including "The Dark Angel" and "The Winning of Barbara Worth".