Madonna's Marriage Risk Over Adoption.

Madonna's Marriage Risk Over Adoption.MADONNA and GUY RITCHIE's marriage will fail if they adopt another child, according to the film director's father.The MATERIAL GIRL is reportedly looking to adopt a baby girl to add to her three-strong brood, but Ritchie's father JOHN believes the extra pressure could seriously threaten the couple's relationship.John insists son Guy is a perfect father to LOURDES, ten, ROCCO, six, and Malawian DAVID BANDA, one - but admits the couple are going through a difficult patch.He says, "They've had a difficult time. (David) is beautiful and Guy is very good with him. But I don't think he'd want to adopt again."