America’s first couple celebrated 20 years of marriage on Oct. 3, and took to Twitter to express their love.

“Happy 20th anniversary, Barack. Thank you for being an incredible partner, friend, and father every day. I love you! –mo,” tweeted Michelle Obama.

President Obama’s campaign posted a wedding photo of the couple on his Twitter feed earlier in the day. Later, the president followed up with a personal message.

“Twenty years ago today, I married the love of my life and my best friend. Happy anniversary, Michelle. –bo,” Obama posted.

The Obamas have become one of America’s favorite romantic couples since they stepped into the national spotlight. Fans delight in their much-publicized date nights, their frequent public displays of affection and the united front they present to the world.

The Obamas spent their anniversary in Denver, where the president faced Republican candidate Mitt Romney in the first presidential debate—not the first lady’s preferred way to spend the day, she said.

“I told Barack, ‘This, you know, attending a presidential debate on my 20th anniversary is probably the worst way for me to spend (it)’…I get so nervous at these debates,” she told CNN. “I would not have chosen this, but I’m excited about it.”