I saw a movie on either showtime or HBO, in the early to mid 90's. I think it was placed in California, it was about a husband and wife who owned either a restaurant or grocery store. The wife cheats on her husband with her son's friend, a few scenes I remember are, the wife and her son's friend wake up early one day and are in the shower while the husband is still alseep. The husband wakes, goes into the bathroom but never realizes she's not alone. Another is when the wife and friend first meet at a picnic, he starts playing around with her with his feet while sitting at the table. I forgot to mention that they are a spanish family, I think Mexican. I also believe the wife leaves with the friend in the end. It might have been one of those red shoe diaries, but I really don't remember