It was revealed back in August that original “Grey’s Anatomy” star Sandra Oh would be leaving the long running ABC series after its 10th season ends. When Oh came on “Good Morning America” to promote “Grey’s” 200th episode (airing Oct. 10), she also opened up about her decision to leave.

“It’s mostly a creative one. Again the rare opportunity of being able to fulfill and grow a character for 10 seasons — actually growing her, I swear, in actual real-life time — and you see people going through relationships, her growth as a human being and as a friend, there just comes a point as an artist where you feel your work is done,” Oh explains.

Oh counts “Grey’s Anatomy” showrunner Shonda Rhimes as one of her close friends, and she says it’s been hard to bid Rhimes farewell.

“It’s still extremely emotional for both of us,” she says. “Every so often I’ll check in and we’ll go into the office and just cry — for what, I don’t know.”

Oh continues, “I’m connected to her through Cristina. … After you clash and you clash, you know a third great thing is about to come out of it, and we’ve hit that over and over again.”

“Grey’s Anatomy” airs on ABC at 9 p.m. ET on Thursdays.

Posted by:Terri Schwartz