Must Love Dogs is a 2005 American romantic comedy film based on Claire Cook's 2002 novel of the same name. Starring Diane Lane and John Cusack, it is the second film directed and written by Gary David Goldberg and was produced on a budget of $30 million. The film focuses on a woman's struggle with divorce and meeting new people afterward.

Diane Lane is an American actress. She made her motion picture debut in George Roy Hill's 1979 film A Little Romance. The film that could have catapulted her to star status, Streets of Fire (1984), was both a commercial and critical failure, and her career languished as a result. After taking a break, Lane returned to acting to appear in The Big Town and Lady Beware, but did not make another big impression on a sizable audience until the western miniseries Lonesome Dove (1989), for which she was nominated for the Primetime Emmy Award for Outstanding Lead Actress in a Limited or Anthology Series or Movie. Lane earned further recognition for her role in A Walk on the Moon (1999), for which she was nominated for the Independent Spirit Award for Best Female Lead. This was followed by several film roles of varying degrees of success such as My Dog Skip, The Perfect Storm, The Glass House, and Hardball.