Dylan Sprouse and Barbara Palvin know that the secret to making any relationship work is each other.

Sprouse, 32, and Palvin, 31, revealed their relationship secrets, including how they have kept their marriage alive since tying the knot in Hungary in July 2023, in a conversation with PEOPLE following the release of their new Spring 2025 campaign and Dress to Express.

"When I travel, he's there with me and we're not away from each other," Palvin tells PEOPLE.

The model says it goes both ways: "When he's on set, I try to visit him. We have this rule that we're not supposed to be away from each other longer than two, three weeks."

Anytime Sprouse is busy with a new project, Palvin travels to his filming location, which helps make the Suite Life of Zack and Cody alum's job easier. Sprouse says he actually loves having his wife with him on set.

"It's definitely easier, but also, the funny thing is, the kind of big secret about the acting industry that being on set's actually really boring, so I always kind of feel bad," says Sprouse. "I'm always like, I hope she's having fun."

"But as opposed to photo shoots or doing content like we did with Express, you're sitting down and waiting around for the majority of the day. What is really nice though is going back to the trailer, seeing Barbara, rehearsing lines, hanging out. It just makes the whole day a lot easier for me," he adds. "But that's me being selfish."

Palvin jokes, "I come in and save the day and entertain him."

For the Express campaign, Palvin played an even more significant role in helping Sprouse.

"I'm used to more video content. I'm used to more of the acting side, so I can tend to be a little bit stiff, but Barbara helps me get out of that shell," the actor tells PEOPLE. "I think with anything, when you work with people that you know and love, it always gets easier."

The couple first made their relationship Instagram official in August 2018. They got engaged in September 2022 and marked their first wedding anniversary in July 2024.

As for what they have planned for this year, Sprouse tells PEOPLE he has a few film projects lined up.

"We do have some plans. We're currently thinking about doing a little remodel on the house, so maybe putting that into action," he adds.