William Daniels and Bonnie Barlett 'Never Stop Being Surprised' by Each Other as They Hit 73rd Wedding Anniversary (Exclusive)

The longtime couple, whose 73rd wedding anniversary falls on June 30, exclusively tells PEOPLE about their enduring love story

William Daniels and Bonnie Bartlett Daniels have reached a new relationship milestone as they celebrate 73 years of marriage. But despite holding the record for Hollywood's longest-lasting marriage, it's not as big of a deal for the longtime couple.

"It seems like we're breaking records. I mean, we both broke a record when we got the Emmys on the same night for the same show. That was a record breaker, nobody had ever done that," Bonnie, 95, tells PEOPLE exclusively in a joint interview with William, 97. "Now, it seems like in Hollywood there are no marriages that are 73 years old, so we seem to break records."

Bonnie continues, "We never thought about it at all. It's very kind of unimportant to us, but it's important to other people."

Related: William Daniels Says He's 'So Lucky' as He Celebrates 97th Birthday with Wife Bonnie and Family (Exclusive)

The couple, who both share Boy Meets World as a career credential, met when they were both students at Northwestern University. After a few years of dating and eventually getting married in 1951, they became parents to sons Michael and Robert. (Their firstborn William Jr. died shortly after birth.)

After all these years, the longtime pair are still discovering more about each other with each passing day.

"You never stop learning. You never stop being surprised. I never know," Bonnie shares. "Every once in a while, he'll do something, and I think, 'Where did that come from? Where did that come from?' Or, he the same with me. We never stop being surprised by what somebody does."

Praising his wife of seven decades, Williams says, "She is a very competent woman. She's smart, and I leave a lot of things up to her."

"She's kind of in charge of all the business, all the money, all of that," the There I Go Again author adds. "She takes care of that."

The actor also notes that it's "important" that Bonnie is "very easy to live with," calling that one of his favorite things about the Middle of the Rainbow author.

Related: William Daniels' Celebrated Career and Life in Photos

As for what Bonnie loves most about Williams, "His sense of humor. It's just incredible. He says funny things all the time, always has," she shares.

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The twosome plan to spend their 73rd wedding anniversary alongside their family.

"Our oldest son is a great cook, and so he'll probably [cook]. Or, we'll go out," she shares. "It doesn't matter, as long as it's family. My granddaughter's here, Grace is here. My son's new lady friend is here, so we'll have a good time with all of them, all [the] people that we love."

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