Matthew Perry and Lizzy Caplan are masters at keeping their relationship status quiet.
The former "Friends" star and his longtime love secretly split up in 2012 after dating since 2006, a source confirmed to Us Weekly.
"It happened a year and a half ago," the insider said. "They haven't been together for a long time."Secret split! Matthew Perry and then girlfriend Lizzy Caplan watching a match during the US Open in 2011.
The "Masters of Sex" starlet, 31, recently spoke about staying under the radar in Hollywood in an interview with U.K.'s Independent, but refused to talk about Perry directly.
"I can stand right next to paparazzi, and I do that sometimes. I'm close with people who are far more famous, and they know how to avoid attention," she said.
The "Mean Girls" actress is allegedly back in the dating game as she was recently spotted on a date with a mystery man at the Redbury Hotel in Hollywood.
As far as what Perry, 44, is up to as of late, he just turned his Malibu mansion into a sober home for men who are adjusting to life after rehab called Perry House.
The actor battled with substance abuse stemming from his rise to fame while playing the iconic television character Chandler Bing.
"I was on 'Friends' from age 24 to 34. I was in the white-hot flame of fame. The six of us were just everywhere all the time," Perry told People Magazine in a July interview.
"From an outsider's perspective, it would seem like I had it all. It was actually a very lonely time for me because I was suffering from alcoholism.