There is no graphic nudity in this movie. However, there is sexually suggestive situations in this movie.
Multiple parts showing Ed and Jill making out and lots of scenes where he kisses Shari.
Topless woman with skimpy panties, back facing camera. Possibly see some of the side of the breast.
In one crucial part, Ed apologizes to Shari for Ray cheating on her. She then tells the camera that Ray is a "bad lay", meaning that he is bad in bed.
Away from the cameras, Ed & Shari make out and she takes off her shirt, implying that she is topless. Nothing is actually shown, since it only shows her arms up. Before anything can sexually progress, the camera catch up with them.