Dave Coulier Says Costar John Stamos Is ‘Going to Be an Incredible Dad’ to Son Billy

Dave Coulier couldn’t be happier that his tighten crony and Fuller House costar John Stamos has finally become a father.

“He’s talked about it given I’ve famous him, that is over 30 years,” a 58-year-old actor tells PEOPLE, hours after Stamos, 54, announced that he and his mother Caitlin McHugh had welcomed their initial child, son Billy.

“Caitlin couldn’t be a improved mom and a improved partner for him. We are unequivocally vehement to acquire her to a family,” Coulier adds.

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RELATED: It’s a Boy! John Stamos Welcomes Son Billy — and Names a Newborn After His Late Dad

Announcing a happy news on Sunday, Stamos went on to share a intense story behind a newborn’s name.

“From now on, a best partial of me will always be my mother and my son. Welcome Billy Stamos (named after my father),” a unapproachable pappy wrote alongside a honeyed design of his son nestled on his chest.

While a name might have come as a warn to fans, Coulier says he knew a baby’s “name would be Billy” when Stamos and McHugh, 31, tied a knot in February.

“I was unequivocally tighten to John’s father Bill, we were golf buddies. We common a ton of laughs together while he was still alive,” Coulier tells PEOPLE. “I know John looked adult to his father immensely. we consider it’s usually wise that his son’s name is Billy.”

Dave Coulier

In an romantic Instagram post final year, Stamos remembered his late father as he wrote that he would “certainly fall brief of a father my cocktail was.”

The actor formerly told PEOPLE that “till a day he died,” his father “was bigger than life to me.”

“You know how we put your father on a pedestal, and he’s a superhero, and afterwards as we grow older, we go, ‘Ah, he’s usually a man’? we never got to that point. Till a day he died, he was bigger than life to me,” he said.

RELATED: John Stamos Jokes He “Needed Years on Television” Before Becoming a Father

Coulier also adds that while it took “a prolonged time” for Stamos to feel prepared to turn a parent, a actor’s tour towards fatherhood “was a healthy progression.”

“For a prolonged time he wasn’t prepared and we consider as life progressed it usually became something that he unequivocally gravitated toward and it was a healthy course for him. I’m so happy for him. He’s going to be an implausible dad,” a actor tells PEOPLE.

But usually since Coulier knows Stamos will make a good father doesn’t meant he thinks Stamos won’t have his work cut out for him.

“John had a lot of use with a Full House kids though that was not on a pursuit training. Now he’ll have to indeed change diapers!” jokes Coulier, who has a son of his own, adding one unequivocally critical square of recommendation for a new dad: “Always rinse your hands in between changing diapers and a subsequent meal.”

John Stamos, Lori Loughlin and Dave Coulier

RELATED VIDEO: John Stamos Says He’s Going To “Be a Fun Dad”

Coulier isn’t a usually one of Stamos’ Fuller House costars to send their congratulations to a new dad. In a matter common with PEOPLE, Candace Cameron Bure sent her best regards to a happy integrate saying, “Congratulations to John and Caitlin!”

“Billy is sanctified to have we as Mom and Dad! Seeing John ‘parent’ over a final 30 years to all his nieces, nephews and TV babies, there’s no doubt how most Billy will be loved,” she added. “And they all lived happily ever after. Congratulations!”

Raved Jodie Sweetin in a matter to PEOPLE, “I am so anxious for John and Caitlin! He’s been such an extraordinary partial of my family for over 30 years, and to see him so happy and blessed with a pleasing small child is wonderful. The whole FH family is over a moon and we can’t wait to accommodate small Billy!”

John Stamos and Caitlin McHugh

A repute for Stamos formerly told PEOPLE that both mom and baby are happy, healthy and home from a hospital. And on Monday, McHugh common a hilarious Instagram video of Stamos playfully doubt her about either she was “sure” Billy was their child.

“I suspicion he’d have improved hair,” a actor joked, before surrender that their “son” (who turns out to be Star Wars‘ R2D2) did have his mother’s “eye.”

The Disney super fan and new mom captioned a lovable clip, “Our son Billy is clearly holding after my side of a family 😉💙.”

Asked either a Fuller House celebration was in a works, Coulier tells PEOPLE it’s usually a matter of time.

“We will all get together, we all get together all a time. we usually haven’t been means to yet. Fuller House starts adult shortly so I’m certain we will chuck a small celebration for him,” he explains.