The actress, 36, who was celebrating her birthday on Saturday, posted a photo with Bader Shammas, a financier, who called him her husband.
“I am the happiest woman in the world. You found me and knew that I wanted to find happiness and grace at the same time. I am stunned that you are my man,” she wrote.
“My love. My life. My family. My future,” Lohan wrote in a post at the time, tagging Shammas.
Lohan is best known for her starring roles in popular remakes of ‘The Parent Trap’ and ‘Freaky Friday’, as well as the 2004 teen comedy ‘Mean Girls’.
“My life and my everything. ❤️Every woman should feel this way every day,” Lohan concluded her post on Saturday.