Maine Mendoza posted a throwback photo of Alden Richards in her latest Twitter post and greeted her onscreen partner with “Happy 20th Weeksary.”

Happy 20th weeksary, Alden! Aldub you! pic.twitter.com/Q71ehzMNZp

— Maine Mendoza (@mainedcm) December 3, 2015

Check out Alden’s reply to Maine:

Grabe siya! 😝 #ALDUB20thWeeksary

— Alden Richards (@aldenrichards02) December 3, 2015