SPIEGEL has exclusive chat messages in which Kasia Lenhardt accuses her ex-boyfriend Jérôme Boateng of physically attacking her. A document from the soccer star's mother supports the allegations.

"My son has been mentally and physically abusing women for years," says Boateng's mother in an email to a Berlin lawyer. "Kasia Lenhardt has taken his own life and he still doesn't want to face the consequences for his behavior," says the mother of the soccer player.