Jon Hamm & Jennifer Westfeldt Split After 18 Years Together

Jon Hamm and Jennifer Westfeldt are splitting up after 18 years as a couple, their rep confirms to JustJared.com.

“With great sadness, we have decided to separate, after 18 years of love and shared history,” the couple said in a joint statement to People. “We will continue to be supportive of each other in every way possible moving forward.”

Jon, 44, and Jennifer, 45, last stepped out together on July 22 at the after-party for the Wet Hot American Summer: First Day of Camp premiere in New York City.

Earlier this year, Jon successfully completed a rehab program with Jennifer‘s support.

ARE YOU SURPRISED that Jon Hamm and Jennifer Westfeldt have broken up?

Click through the gallery below for photos of the couple in happier times…