This is in the scene where David (Woody Harrelson) is looking at pictures of Diana (Demi Moore) after they have separated and he has his own place. He looks at a picture of her - we can clearly see the back of the photograph in this shot, and there is no writing on the back of it. However, when he turns it over, there is a message on it - "D, Have I ever told you I love you? Love, D"