Appaloosa (2008)

A man and a woman go skinnydipping; they are both shown fully nude from behind. A woman's breasts are shown through a sheer nightshirt in a sexual context.

Man and woman are shown in bed together, implying having had sex as he is shown bare chested. A man secretly watches a women walk up the stairs in a hotel. He also observes her go downstairs afterwards, which she notices; he suspects her of not being faithful to his best friend.