Former President Barack Obama had celebrated his wife, Michelle’s 57th birthday by sharing a throwback photo of the former first lady on Instagram and Twitter alongside a sweet caption.

“Happy birthday to my love, my partner, and my best friend. Every moment with you is a blessing. Love you, Miche,” Barack, 59, captioned the post.

The Obamas tied the knot in 1992 and share two daughters:  Malia, 22, and Sasha, 19.

In November, Obama admitted in an exclusive interview with PEOPLE while looking back at his presidency and new memoir, A Promised Land, that he and Mrs. Obama faced marital struggles during his eight years as president.

“That was the truth of our time in the White House,” he said.

The father of two continued: “During the time we were there, Michelle felt this underlying tension. The pressure, stress, of needing to get everything right, to be ‘on’ at every moment. There were times where I think she was frustrated or sad or angry but knew that I had Afghanistan or the financial crisis to worry about, so she would tamp it down.”

But the couple eventually managed to revive their unconditional love once their dutiful job in Washington D.C. was done.

“It was like a big exhale right after we left office,” he said. “It took some time to talk about how she had felt. Once [the presidency] was done, there was possibility of her opening up … but more importantly just her being able to let out a breath and relax.”

Mrs. Obama also became “more relaxed and more joyful since we left office,” her husband said, adding, “That allowed us to just enjoy the deep love that comes with a marriage this long.”

Since leaving the White House in 2017, the Obamas have eschewed national politics in favor of social causes, their personal memoirs and projects.

In addition to their partnership with Spotify, the pair also inked a deal with Netflix to produce television shows and films for the streaming service.

Their production company’s first feature release, American Factory, debuted on Netflix in 2019 and went on to win the Academy Award for Best Documentary Feature.