David's Cuckoo for Coco

Nearly four years into fatherhood, proud papa David Arquette still can't believe daughter Coco is his little girl.

“It’s like this incredible little person moved in with us,” he tells OK! of his 3-year-old daughter with Courteney Cox. “She is so funny and has such an amazing personality. It is so cool having her around.”

The quirky actor plans to share the love with a fun-filled dads’ soiree for Father’s Day, which happens to fall on Courteney's 44th birthday and two days after Coco's fourth birthday. “I’m going to have other dads over, and we’re going to barbecue and hang out by the pool and relax," he says.

Perhaps David, 36, can have a pow-wow with his fellow dads to get some fatherly advice.

“I’m learning how to be a better father all the time,” he says. “I can’t claim to be a great one yet!”