Mae Whitmanis opening up about some of her most memorable roles — and the special friendships she gained from them.

In this week’s issue of PEOPLE, theGood Girlsactress, 32, reflects on the 25th anniversary ofOne Fine Day— the 1996 romantic comedy in which she starred alongsideGeorge Clooneywhen she was just 8 years old — and the strong connection she’s shared with the actor over the years.

“One Fine Daywas such a cornerstone for me, of who I am,” Whitman, who played Clooney andMichelle Pfeiffer’s characters' daughter in the film, says. “Especially working with George, we became so genuinely close, in a way that is funny. He’s just somebody that my soul really connected with.”

Mae Whitman and George Clooney.Getty

mae whitman

While Whitman kickstarted her career at just two years old, the Los Angeles native was able to maintain a semi-normal childhood … and even had Clooney’s help when it came to school projects.

“Remember when they used to sell wrapping paper in school, and you’d try to sell the most wrapping paper? I remember George would always wait until the very last day, like the deadline,” she says. “And then he’d be like, ‘Okay, what’s the highest kid have?’ And then he would quadruple it. So I would walk into class and go, ‘George Clooney, he wants 10,000 wrapping papers.’ Those are the memories I have. I felt so supported and I felt loved.”

Jamie Mccarthy/Getty; Rodin Eckeroth/Getty

mae whitman and george clooney

Though Whitman has shared the screen with iconic actors such as Sandra Bullock,Will Smithand more, she’s had the strongest connection with Clooney.

“These are people who are experts at their craft, guiding me and showing me the way, and being on set with me, and helping me in moments of vulnerability,” theParenthoodactress says. “I just feel really grateful that I was able to have these experiences with these people I really respect, that are cornerstones of who I am now.”

“[George] and I stayed close for many, many years,” she adds. “I think one of the last times I saw him I was with an ex-boyfriend at a movie theater. I hadn’t seen him in a while, and I went up and I was like, ‘George, oh my God!’ And he immediately bee-lined past me and grabbed the guy I was dating at the time, and was like, ‘If you ever hurt her, I will hunt you down.’ I feel like we will always have that connection.”

Now, Whitman is gearing up for her fourth season as mom Annie Marks of NBC’sGood Girlsalongside Christina Hendrick and Retta.

“Like I truly don’t even remember what my life was like before I knew them,” Whitman says of her costars. “The thing I love aboutGood Girlsis that everybody on the crew really cares so much. We really are like a big family, we really are so positive.”

The latest season ofGood Girlspremieres March 7 on NBC.

source: people.com