Today, former President Barack Obama celebrates his 59th birthday.To honor the special day, former First Lady Michelle Obama shared a throwback photo of the two with their daughters, Sasha and Malia Obama, on Instagram.The couple recently dished about their relationship on the premiere episode of The Michelle Obama Podcast on Spotify.Former President Barack Obama turns 59 years old today, and former First Lady Michelle Obama is celebrating with a sweet dedication to her "favorite guy" on