Joe and Jill Biden have opened up about how moving into the White House has changed their relationship and what they're doing to ensure their 44-year marriage stands the test of time.

It's been half a year since 78-year-old Joe Biden took office as the US' 46th president, which has brought with it some substantial changes to the Biden family.

Many of these changes revolve around the fact that they are spending much less time with one another as they carry out their duties as president and first lady.

Dr. Jill Biden, who is Vogue's August 2021 cover star, revealed in a recent interview with the magazine that their packed schedules have been a real challenge.

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The 70-year-old said: "And so we have to, I think, try a little harder to make time for one another. Even the thing about having dinner together: Sometimes we eat on the balcony; last night we ate in the yellow Oval, upstairs.

"It's just part of the day that we set apart, and we still light the candles, still have the conversations, still put the phones away."

Agreeing that the two of them do not get to spend as much time together as they once did, President Biden said of his beloved wife: "I miss her."

He added: "I'm really proud of her. But it's not like we can just go off like we used to. When we were living in Delaware and married, once a month we'd just go up to a local bed-and-breakfast by ourselves, to make sure we had a romantic time to just get away and hang out with each other."

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"And the other thing is, she’s been traveling all over the country. And doing major events for me…and for the country. And so I'll find that I'm working on a hell of an important speech and I'm distracted," he went on.

"And then I may not be working on one and I want to go and hang out with her, and she's working on an important speech! Or grading papers. We have to figure out a way - and I mean this sincerely - to be able to steal time for one another. I think that's the deal."

The incumbent president also shared with the magazine that the first time he watched his wife deliver a speech in front of a large crowd, he thought: "That's my girl. So proud. She would just go do it, and she got better and better."

Featured image credit: Alamy / American Photo Archive

Joe and Jill Biden open up about how the White House has changed their marriage: 'I miss her'