John Stamos got a little emotional when he sent his 4-year-old son Billy to school.
The “Fuller House” alum, 59, posted a smiling photo of herself and the new student in white shirts on Tuesday via Instagram.
“One of us is starting his first day at school,” the actor wrote on social media upload.
“And the other does everything he can not to cry.”
Stamos’s wife, Caitlin McHugh, shared a similar photo with Billy, wearing a white shirt of her own.
“Today was Billy’s first day at a new school!” the model, 36, wrote. “Nervousness and excitement everywhere.”
The couple welcomed their son in April 2018, two months after their wedding.
While the couple wants to give Billy a sibling, the “Grandfathered” alum told Us Weekly in February 2021 that quarantine during the coronavirus pandemic “got in the way” of their future family plans.
“He’s been asking for a sister,” Stamos added, noting that sharing his parents “would probably eat” [Billy] up for a while.”
The little one often hindered Stamos and McHugh’s attempts to conceive baby No. 2, the “You” alum joked to People six months later.
“We’ve been trying for a while now and it hasn’t worked out yet,” the musician explained in the August 2021 interview.
Stamos hinted at their hopes for another child in May of the following year, while wishing his partner a happy birthday in a tribute on Instagram.
“Let’s continue adding to these photos! (And our family),” he captioned a slideshow. “LOVE YOU.”
As for McHugh, the actress told her followers in June that she is “grateful” to be on a “parenting journey” with Stamos.
“Billy is a lucky boy to call you Daddy,” she gushed.