2015: The Summer of Splits

From Gigi Hadid and Cody Simpson in May to Jon Hamm and Jennifer Westfeldt in September, here at the 16 couples who called it quits during the summer of 2015. Here's hoping the fall will be a lot less heartbreaking

JON HAMM AND JENNIFER WESTFELDT

After 18 years (!) together, the Mad Men star and actress/screenwriter Westfeldt announced with "great sadness" that their relationship had come to an end. The couple – who met in 1997 and starred together in Westfeldt's 2011 film Friends With Kidstold PEOPLE in a joint statement, "We will continue to be supportive of each other in every way possible moving forward."