matthew perry lauren graham gi 'Go On': Lauren Graham checks in on Matthew PerryAn old friend of Matthew Perry will guest on his new show “Go On” later this season.

No, not that kind of “Friend.” “Parenthood” star Lauren Graham, a real-life pal of Perry’s, will appear in an upcoming episode, EW reports.

Graham and Perry dated briefly about a decade ago and have remained friends ever since. She also guested (as herself) on a couple of episodes of Perry’s series “Studio 60 on the Sunset Strip” in 2006.

In “Go On,” Graham will play a friend from college and former co-worker who drops in on Perry’s Ryan King as he continues to deal with the loss of his wife.

There’s no airdate for Graham’s episode yet. “Go On” airs at 9 p.m. ET Tuesdays on NBC, an hour before “Parenthood.”