Madonna's Marriage on the Rocks?  4/21/07

Madonna's marriage to movie director Guy Ritchie is reportedly on the rocks, after the filmmaker was spotted dancing intimately with a mystery brunette at a London club.

The 48-year-old singer, who is currently in Malawi visiting an orphanage, was allegedly furious at her husband for not accompanying her on the trip to Africa, and the couple are said to have had "screaming" rows over the phone earlier this week (begs16Apr07).

And Ritchie's behavior in trendy London nightclub Mahiki last night (20Apr07) can't have helped the situation.

An eyewitness tells British newspaper The Daily Record, "Guy went all out to let his hair down. He came with a group of blokes who were all up for having a big night. Guy seemed a bit solemn at first. He seemed determined to drown his sorrows as the drinks flowed.

"Then he hit the dance floor and spotted a leggy brunette. They seemed to just click together. When they got talking they began dancing closely. They didn't leave together but got very close on the dance floor."