Troubled British pop star Amy Winehouse and her ex-husband Blake Fielder-Civil have married again, just three months after they officially divorced.

According to reports, the two updated their social networking site Facebook saying they are "married" again.

Blake in a separate post wrote: "Can't argue with true love. What's the point?"

The two had ended their marriage when Blake divorced Winehouse on grounds of infidelity. But the two kept in touch and Winehouse's father Mitch even caught them in bed together.

"Amy's family, especially Mitch, will be furious. They have been so happy with her progress and are terrified that if she gets back together with Blake she will fall back into drugs again," said a friend.