A man and a woman have sex. He takes off his shirt and then he takes off her shirt and pants. We see her only in her underwear and they start to have sex in the bed. He then takes off her bra, though we don't see anything, it's obvious that he can see her breasts, and then the rest of the sex is offscreen.
A character falls into a freezing river and is suffering under hypothermia. A female character strips him down completely naked, strips down to her underwear, and then presses her body against him to warm him.
At the end of the movie, the two leads prepare to have sex. He removes his shirt and she pushes him against the bed where the kiss, hug and prepare to have sex.