Drew Barrymore and Cameron Diaz have known each other for over thirty years, having met when they were fourteen and sixteen, respectively.MORE: Drew Barrymore admits to difficulties with revealing childhood traumaThey have starred in movies together, partied together, seen one another's ups and downs, plus, have witnessed a slew of different significant others each has dated.You're not always going to like the person your best friend is dating, and during a recent conversation on The Drew Barrymore Show, Cameron opened up about how she really feels about the host's dating life.WATCH: Cameron Diaz shows a glimpse of her new kitchen at homeMORE: Drew Barrymore celebrates her daughter's birthday with an adorable photo you can't missDuring a conversation that took place as they were being driven around New York City, Drew proposed they play a game in which whenever they stopped at a red light, Cameron had to make a confession.Leaving the juiciest for last, she finally asked the There's Something About Mary lead: "Did you ever lie about liking anyone that I have dated?"The two quickly were engulfed in hysterical laughter, and the mother-of-two first answered for her longtime friend, saying: "You're incapable of doing that.