The undefeated five-divison world champion is accused of battering, blackmailing, imprisoning and stealing from his former lover Shantel Jackson.
Mayweather, who is set to fight Marcos Maidana this weekend, now faces a trial by jury after his ex filed the explosive lawsuit.
The 29-year-old model announced she was suing Mayweather last week, claiming at a press conference that he beat her and invaded her privacy by posting a picture of an ultrasound scan online and announcing that they broke up because she aborted their twin babies.
But in sensational court documents the full extent of the boxer’s tumultuous on-off eight year relationship with the beauty is laid bare in painful detail.
Shantel says she suffered years of hell at the hands of Mayweather, 37, whose ‘outrageous acts’ caused her ‘pain and humiliation’.
During one argument, he allegedly choked and twisted her arm, while in another he held her at gun point and threatened to shoot her.
He also kept her ‘prisoner’ in his Las Vegas home, threatened to publish naked pictures he had secretly taken of her while she slept and stole thousands of dollars worth of belongings from her, her court filings claim.
And in raging verbal attacks he called her a ‘bum’ and a ‘b*tch’ telling her, ‘You’re not sh*t without me. I made you who you are.’
Shantel is seeking unspecified damages from Mayweather for battery, assault, defamation, invasion of privacy, false imprisonment, harassment and infliction of emotional distress.
The case is due to be tried by jury in Los Angeles and is expected to last seven days, court papers show.
Stunning Shantel met the boxer in 2006 when she was aged 21 and working as a hostess at an event in Atlanta, Georgia.
The pair began dating and soon after Mayweather asked her to move in with him in Las Vegas.