07/21/2014 11:37 am ET Updated Jul 21, 2014

4 Lessons Rob Reiner Learned About Love

Castle Rock Entertainment

To quote the song that opens his latest film, Rob Reiner, 67, has looked at love from both sides now. The force behind one of Hollywood's most enduring romantic comedies about young adults, When Harry Met Sally…, Reiner (with stars Michael Douglas and Diane Keaton) tackles more mature matters of the heart in And So It Goes, which opens July 11. The director, whose parents, the comic mastermind Carl Reiner, 92, and his late wife, Estelle, were married for almost 65 years, has learned a lot about the subject of love over the years. Among the lessons:

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