And we're still melting:
"What inspires me the most is always waitin' for me to walk thru my front door when I come home," the 43-year-old actor wrote.
His youngest, Jasmine, just turned 4 months old, and Johnson took the opportunity to write a short letter to her.
"One day you'll know just how happy, proud, lucky and blessed you, your sister and your mama make me," he wrote. "You'll also thank me one day for your toughness and your mama's everything else."
Johnson, who spent time in Hawaii as a child, signed off with the hashtag #Ohana4L. Ohana, as the movie "Lilo & Stitch" taught us, means family in Hawaiian, and it's clear that value is high on Johnson's priority list.
Happy 4 months, Jasmine!