"I knew right away [and] was like, 'Oh boy, here we go,' " the This Is Us star tells PEOPLE

Four years to the day since they first met, Justin Hartley and Chrishell Stause tied the knot on Oct. 28 in an intimate ceremony at Malibu’s Calamigos Ranch.

And, to hear them tell it, the stage for their love story was set on that very first date.

“The next day I texted my friend: ‘I found him,’ ” says Stause, 36.

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Credit: Allison and Brian Callaway/Callaway Gable

Though they met in passing early on in their careers, sparks flew when one of Stause’s Days of Our Lives castmates, who was a pal of Hartley’s, introduced them. “We met up at a concert and talked all night,” says the This Is Us star, 40.

“I drove her home and called the next day. We haven’t been apart since. I knew right away [and] was like, ‘Oh boy, here we go.’ ”

  • For Justin and Chrishell’s exclusive wedding album, pick up this week’s issue of PEOPLE, on newsstands Friday

Now that they’ve made their union official – marrying in front of 75 of their closest friends and family in a rustic and romantic ceremony – they’re reflecting on their big day and their future.

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Credit: Allison and Brian Callaway/Callaway Gable

“The wedding exceeded anything I could have ever imagined,” Stause tells PEOPLE. “They don’t make them any better than Justin, and I could not be more thrilled to officially be Mrs. Hartley!”

Mr. Hartley certainly agrees. “At the risk of sounding cheesy, I look forward to sharing life experiences and growing old together. Someday, we can talk about all the things we did together 30 years ago!”