Just months after denying a break-up, Jon Hamm and his long-term girlfriend call it quits

Mad Men star Jon Hamm has split from girlfriend Jennifer Westfeldt after a whopping 18 years together, it’s been confirmed.

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The couple made the emotional announcement in a joint statement to People, saying: ‘With great sadness, we have decided to separate, after 18 years of love and shared history.

‘We will continue to be supportive of each other in every way possible moving forward.’

The news may come as a shock to some, given that Jon and Jennifer denied split rumours only a few months ago following 44-year-old Jon’s rehab stint for alcohol abuse.

Actress Jennifer – who also works as a director, producer and writer – was credited with helping Jon following the 30-day treatment.

A statement at the time from Jon’s rep said: ‘With the support of his longtime partner Jennifer Westfeldt, Jon Hamm recently completed treatment for his struggle with alcohol addiction.

‘They have asked for privacy and sensitivity going forward.’

Unfortunately the pair have continued to be dogged by speculation of a break-up in recent months, heightened by the fact that they haven’t been seen together in public since July.

Jon and Jennifer, 45, first started dating in 1997. They’ve starred together in films such as Kissing Jessica Stein and Friends With Kids, which Jennifer also wrote and directed.

Just last year Jon spoke of how he felt incredibly fortunate to have long-term girlfriend Jennifer in his life.

‘Our lives are entwined,’ the actor explained. ‘It’s a long time [together]. I’m definitely the guy that repeats his stories!

‘Mostly it’s just paying attention and keeping engaged and not succumbing to inertia or going through the motions.’

Jennifer supported Jon throughout his time on Mad Men as the iconic character Don Draper, a role that he’s previously admitted wasn’t always easy to deal with in his personal life.

‘Playing this guy does not come without its own difficulties,’ he told Variety earlier this year. ‘It’s not fun to live in this guy’s headspace year after year.

‘And [showrunner] Matt [Weiner] will tell you, the darkness in Don has not abated, it’s gotten worse year after year. It’s relentless.

‘And it can be hard on you as a person. I love coming to work; I love the people I work with. But it’s been rough.’

Anna Francis