“Happy birthday to the love of my life, @MichelleObama,” the former president wrote, shadily. “You fill every room with warmth, wisdom, humor, and grace—and you look good doing it. I’m so lucky to be able to take on life’s adventures with you. Love you!”

Barack Obama and Michelle Obama are at the center of divorce rumors sparked by Meghan McCain. Here's what to know about their rumored separation.

The former first lady has made headlines for absences at recent public events, from Jimmy Carter's funeral to President Trump's inauguration.