Breaking Up Is Hard to Do (1979)

Billy Crystal leads a group of suddenly single friends seeking sun, surf and sex to heal the wounds of their recent divorces. Together, they enjoy wild weekends at a beach house in Malibu, soaking up the singles scene and rediscovering life after marriage. The cast includes Robert Conrad as a talent agent in love with a woman who bears a strange resemblance to his ex-wife and Jeff Conaway, who finds a cure for his shattered self-confidence through a glamorous actress. Amidst misadventures and all-night parties, they build the most important friendships of their lives, giving each other the strength to flourish once the summer is over.