Kaley Cuoco-Sweeting, like the rest of us, is mourning the loss of her dear friend, James Garner, whom she affectionately called, “Gramps” or “Grampa Jim.”

The Big Bang Theory star posted several sweet notes on Instagram about the man she worked with on 8 Simple Rules.

“Well I woke up with a broken heart today. The world has lost a legend. James Garner was a gift to our business and an example of honesty and pure class. It was an honor to have worked beside him and receive his bear hugs every day. I love you gramps,” she posted along with a vintage photo of The Notebook star.

In the show, which ran from 2002-2005, Cuoco-Sweeting played Bridget Hennessy, the granddaughter of Garner’s character.

Garner died Sunday at the age of 86 from natural causes. He was found in his Brentwood home.

In another post she wrote, “This is all I can think about right now. Love you, Grampa Jim.”

And finally, she posted one of just the two of them with the caption, “I’m seriously the luckiest girl in the world getting to spend my time w the only and only Grampa Jim. We lost a good one.”

Kaley Cuoco-Sweeting is not the only one to share their loss on social media. Sites were flooded with fond memories of the Maverick star.

There's a reason we played brothers with such effortless joy. I loved him as if he were my own blood. RIP, Dear Jim. pic.twitter.com/nWKkrh2gad

— James Woods (@RealJamesWoods) July 20, 2014

Lois Garner just told me, "I'll never be the same. My Jim is gone." Her tears speak for all of us. #JamesGarner RIP pic.twitter.com/vUFLkfZMsX

— James Woods (@RealJamesWoods) July 20, 2014

R.I.P James Garner.Such a lovely man I had the pleasure of working him in 1989 in My Name Is Bill W with James Woods. http://t.co/YoRLWM95wz

— Gary Sinise (@GarySinise) July 20, 2014

Away from home; can't sleep. Now sad to read my dear friend & costar James Garner passed. RIP sweet Jim Rockford. XX pic.twitter.com/WUHJ2ic59z

— Marlee Matlin (@MarleeMatlin) July 20, 2014

Comedy, drama. Movies and TV movies. Did series when it wasn't cool and made them iconic. Never stooped to "acting! " James Garner: my hero.

— Rob Lowe (@RobLowe) July 20, 2014

Life as we know it, has missed a beat today with the passing of a #Legend and true Man , James Garner. #RIP

— David Boreanaz (@David_Boreanaz) July 20, 2014

CoolRT @L_EdwinSaar: handsome man. good person, James Garner holding Diahann Carroll's hand at MLK March on Wash 1963 pic.twitter.com/dZ2IKZSBg6

— Kathy Griffin (@kathygriffin) July 21, 2014

R.I.P James Garner.Such a lovely man I had the pleasure of working him in 1989 in My Name Is Bill W with James Woods. http://t.co/YoRLWM95wz

— Gary Sinise (@GarySinise) July 20, 2014

Yes, Grampa Jim, you will be missed.

Image via Kaley Cuoco-Sweeting, Instagram