The X Factor judge, 31, revealed the surprise news on Sunday night by posting a picture of her engagement and wedding ring.
"I usually do not discuss my personal life but to stop the speculation I want to share my happy news... Jean-Bernard and I married on 7/7/14..," read the text accompanying the picture.
"❤️ We are very happy and excited to move forward with our lives together.."
The happy news comes as a surprise because the singer and Jean-Bernard Fernandez Versini have only been dating three months.
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The handsome restaurateur is Cheryl Cole's first serious romance since splitting from backing dancer Tre Holloway last summer.
Jean-Bernard runs pop-up restaurant and celeb hangout Cosy Box in Cannes, and it is thought this is where the hot new couple first met. At the end of May, they made their first British public appearance together at the trendy Chiltern Firehouse in London.