Actress Jennifer Westfeldt and her long-time partner, Jon Hamm broke up earlier this month and both actors are having a tough time dealing with it.

Us Weekly was able to interview Matthew Weiner, creator of Mad Men, during the 2015 Creative Arts Emmys at the Microsoft Theater in Los Angeles last Saturday. He described the break-up of his two close friends as “rough” saying: “It’s a tough time for (both of them).”

Mad Men’s Matt Weiner on Jon Hamm and Jennifer Westfeldt’s split: “I wish them both the best” http://t.co/vvH3WPlQgF pic.twitter.com/nUmUU4fctB

— People magazine (@people) September 13, 2015

Weiner is positive that the two will soon move on and find happiness. “All I can say is I wish him the best. I wish them both the best. They’re both incredibly talented, wonderful people. They’ll both find happiness, there’s no doubt in my mind,” the Mad Men creator said.

Westfeldt and Hamm had been together for 18 years but on September 7, the couple announced their decision to end their relationship.

In a statement, the couple expressed their sadness over their separation: “With great sadness, we have decided to separate, after 18 years of love and shared history.” Although they are separating, Westfeldt and Hamm said they would be “supportive of each other in every way possible moving forward.”

Sad news: Jon Hamm and Jennifer Westfeldt split after 18 years together http://t.co/WxoPrISpef pic.twitter.com/Kv6N2EGsrY

— People magazine (@people) September 7, 2015

Months before their separation, 44-year-old Hamm expressed his gratitude toward his girlfriend for helping him when he went to rehab for alcohol abuse.

According to the actor’s representative, Hamm completed treatment for alcohol abuse with the steadfast support of his girlfriend, Westfeldt.

The ex-couple had tried to work out their issues in their relationship but an insider told Us that they did not share the same vision for their family. The source close to the actress revealed Hamm wanted kids but Westfeldt did not.

The couple met at the party of a friend and started dating in 1997 but they never married.