Lorraine, the person caught in the infidelity, is also the person indignant about the actions of Adam in the situation. I believe that this is because Lorraine is a very complex symbol, alternating between representing Diane in her guilt and representing Diane's mother figure in her indignation. Her blonde hair is longer than Diane's and so, although I believe that a relationship to Diane is being indicated, Lorraine is not like other blonde doppelgangers in the film who have short blonde hair. The longer hair is probably indicative of greater age, like the mother figure. And I believe that there is more color symbolism involved.
Black and blue come up in many contexts, for this reason, I believe that Lorraine's black underwear indicates that she represents a person with power in Diane's life, again, like the mother figure. But when Lorraine puts on a blue dress, the symbolism changes. The blue dress tells us that Diane is experiencing a terrible transition from innocence to a more victimized and traumatic state. Lynch reinforces this interpretation by having the pink paint splatter on both Adam and Lorraine because they both were affected by the trauma suffered by the pinkish Diane in different ways. But the pink paint stays on Adam for quite awhile to indicate that the experience left a mark on Diane that would not go away. This color narrative tells us that Diane was forever scared by a traumatic incident involving incest as a child. However this is not the only evidence of this event in Diane's history. Other clues make reference to it as well, but the fact of the matter is that the color narrative shows us this information once we have learned how to read Lynch's language of symbolism. — Alan Shaw
For those who believe that the scene with Lorraine and the poolman is a reenactment of Diane's childhood abuse, it is very interesting to notice that the next line Betty says is "Let's hide it". This adds to the perception that the whole middle of the movie is one prolonged scene revealing Diane's troubled past, although superficially we see scenes that shift between different characters. This complex scene develops because the Rita and Betty characters are interacting in Ruth's apartment, their synergy is bringing out what can not be hidden. — romdal
Trivia
Coincidence? Note the similarity:
- In the dream Adam is married to a woman played by actress Lori Heuring.
- In the real world Adam is going to be married to a woman played by Laura Harring.