The father and Nuuk actor went to social media to express his love for his twins and reminisced about the day when they came into their lives.
"How time flies,” wrote Aga on Instagram. “The first time I held you both when you were born. 18 years later here you both are in your senior year.”
He also reiterated his advice to his two children, which is to always be compassionate towards other people.
"As I’ve always told you growing up... always be kind to everyone and never judge people. Love one another,” he went on.
He also encouraged the two to pursue whatever dreams they may have, but he gave emphasis on trusting God and His plans.
"I know you both have so many dreams in life and yes, there is so much in life that you will experience as you both start to fly and achieve your dreams. But always remember this.. we follow God’s plan and not ours. "
The star of the now-showing movie Nuuk and the upcoming Miracle in Cell No. 7 did not forget to thank his children for the happiness they brought to their family and for making him and Charlene better parents. He, too, encouraged them to continue to be blessings to others.
"You both have given me and your mom so much joy and love and at the same time taught us to become the parents that we are now. Thank you for the blessing that you are to us and to many. Continue to spread love and kindness to all our brothers and sisters in Christ. Continue to plant good seed so we reap good harvest.”
The 50-year old thespian ended his 'lambing' birthday greeting post with: "Happy 18th birthday to my crazy loving and very kind and humble heart partners in crime. Love you with all my heart. Go out and fly and continue to love, be kind and and always help people in need. God loves you both. We do! Happy birthday!!! Antonio Andres and Atasha Aaron Muhlach. Cheers!! @aagupy @atashamuhlach_ "
Birthday greetings for the twins flooded the comment section including those from the celebrities such as Eat Bulaga host Ryan Agoncillo, Broadway star Lea Salonga, seasoned actor and director Rowell Santiago, and multi-awarded singer Gary Valenciano.