Taking to his Instagram, Timberlake wrote: "The last 3 years of my life have brought more joy than I could ever imagine. Being a father is such a trip... an amazing discovery every day. My son: it is my honour to be your Daddy."
"You make me feel a love that I didn't know existed. I will ALWAYS be there... to pick you up when you fall, to lift you up when you are ready to soar, and to remind you that your humility will be your guide through this thing called life," he continued.
Before sharing a wide message to all his fans who are fathers, too. "And to all the Dads out there: Keep on keeping on! Our children are watching and listening more than we know! I'm celebrating you all today! Happy Father's Day! Cheers! 🍻," the 37-year-old concluded the post.
Timberlake's wife, Jessica Biel, 36, also took to Instagram to dedicate a message to her husband.
"To my husband who I watch with aweevery dayy as he guides and teaches, encourages and supports, and above all, LOVES the sh$t, out of his own young man.
Happy Father’s Day to all the dads out there. We can’t do this parenting thing without you!" she wrote.
Too cute! The pair wed in 2012.