Even the most loyal among us sometimes like to indulge in films about affairs . Maybe it's getting lost in a fantasy you know you would hate to fulfil in real life, or just the general excitement that comes from the movie's illicit love (or, often, straight-up sex). Whatever your reason for sitting through a film about a not-so-neat affair, there's more than enough movies to satisfy the urge. Hollywood adores some steamy adultery , so don't feel guilty about enjoying this genre.