John Stamos has taken to Instagram to congratulate someone he’s known for a long, long time on their recent nuptials.

Full House costar Mary-Kate Olsen just got married to Olivier Sarkozy, the half-brother of former French President Nicolas Sarkozy. It’s the first marriage for Olsen.

Stams shared a throwback photo of him and Mary-Kate and Ashley, at what appeats to be Disneyland.

“In the blink of an eye. Congrats MK. X,” Stamos wrote on Instagram.

Check out the adorable pic below:

"In the blink of an eye." Congrats MK. X

A photo posted by John Stamos (@johnstamos) on Nov 30, 2015 at 4:49pm PST

Stamos has been getting sentimental lately on Instagram. Just a few days ago he posted this throwback prom pic, and boy is it a doozy:

#TBT #Prom #Hair.

A photo posted by John Stamos (@johnstamos) on Nov 26, 2015 at 10:25pm PST

Stamos wasn’t the only Full House member to congratulate Mary-Kate Olsen. Bob Saget said he sent her a “mazel tov text.”