Casey Affleck shared a throwback photo from 2002 accompanied by a heartfelt message

with his brother Ben Affleck and Jennifer Lopez after missing their Georgia wedding weekend.

"Good things are worth waiting for," he wrote on Instagram.

"Here is to twists and turns, new beginnings, and finding new reservoirs of old love.

"Welcome to the family. Get ready for some real dysfunction! Kidding. I am kidding."

Despite Jennifer and Ben already getting married in Las Vegas last month, the couple hosted an intimate, three-day affair at his private

87-acre estate over the weekend, which Casey could not attend.

Casey continued in the post to his 44,000 followers: "Jen, you are a gem. We love you so much!!!"

Casey Affleck shared a throwback photo from 2002 accompanied by a heartfelt message

Ben and Jen first began dating in 2002 after meeting on set of the box office flop "Gigli,"