Near the beginning of the film a woman talks about "shagging" with a man.
Two characters discuss having sex almost immediately after meeting, and it is said later that they did.
One character admits to cheating on another and having sex with another woman.
No Nudity (one woman is in the bathtub but you only see her arms, feet and above her shoulders. No Sex (except a flash back when two people are supposedly having sex), implied (not seen) sex. Kissing and implied sex only in this romantic comedy.
We hear Iris' voice-over narration about different types of love, including the kind that can be found just for the night (as we see separate footage of a man smiling at a young woman in a bar).
There is one scene with two characters in bed obviously immediately after sex and the woman is in her bra.
A lot of discussion between two characters about how their sex is meaningless.
Several kissing scenes between characters throughout.