NICK GORDON, Bobbi Kristina Brown’s longtime boyfriend whom she often referred to as her “husband,” is being accused of causing Brown’s death.

    An amendment to an existing lawsuit filed against Gordon by Brown’s court-appointed conservator, Bedelia Hargrove, claims that Gordon gave Brown a “toxic cocktail” of drugs and then put her face-down in a tub of cold water. All of this allegedly led to Brown suffering significant brain damage and her death. The original wrongful-death lawsuit was filed June 24 in Fulton County Superior Court, claiming Gordon took money from her without authorization and abused her physically and emotionally. The amendment was filed Friday, raising the stakes by including a detailed scene of abuse.

    The amended complaint alleges that around 6 a.m. Jan. 31, Gordon returned to their Atlanta-area home after “being out all-night on a cocaine and drinking binge” and proceeded to review camera footage of Brown and listen to her conversations. The couple began arguing, moving around the house, as Gordon reportedly accused Brown of cheating, while calling her names. This lasted about 30 minutes before “everything abruptly became quiet.”

    The suit says then Gordon “gave Bobbi Kristina a toxic cocktail rendering her unconscious and then put her face-down in a tub of cold water causing her to suffer brain damage.” Gordon then came out of the master bedroom wearing a different set of clothes from what he’d been wearing before the argument, got in bed and laid his head on a female guest’s ankle and told her, “Now I want a pretty white girl like you,” the new amendment continues.

    About 15 minutes later, a guest went into the master bedroom to check on Brown and found her unconscious in the bathtub. Oddly, a dustpan was at the bottom of the tub. “Bobby Kristina was unresponsive, unconscious, her mouth was swollen, and another tooth was hanging loosely from her mouth,” the suit claims.

    Brown died July 26 at 22.

    Among the criminal counts listed against Gordon, the lawsuit accuses Gordon of assault, battery, intentional infliction of emotional distress, conversion, wrongful death and pain and suffering. (SD-Agencies)