Ever since Bobbi Kristina Brown was found unresponsive in her bathtub back in January, her estate has been trying to figure out exactly what caused this, which eventually led to her death six months later. There have been suspicions that her boyfriend Nick Gordon could be responsible for this devastating situation, and now lawsuits are claiming that he gave her a "toxic cocktail" on that day in January.

A multimillion-dollar wrongful death lawsuit was filed on Friday against Gordon by Brown's estate, according to CNN. The lawsuit claims that he is the one responsible for her injuries and that he gave her a "toxic cocktail" on Jan. 31, which knocked her out. The suit claims that he then placed her face-down in a bathtub of cold water, causing her to suffer brain damage.

Gordon is not facing criminal charges, but these are the most specific, and graphic, charges that have been filed against him since January, according to the New York Daily News. At the time of the incident, Gordon lived with Brown and was allegedly the one who "found" her face-down. These allegations, along with some previous ones, claim that Gordon was violently abusive towards Brown, especially in the days leading up to her coma. The files claim that he apparently "beat her face bloody" and "kicked her until she was screaming on the floor, curled up in a fetal position."

The paperwork says that on Jan, 31, he came home at 6 a.m. from "an all-night cocaine and alcohol binge" and started accusing Brown of cheating on him, according to NBC News. They got into a "loud argument" for about 30 minutes while he screamed at her, calling her a "whore" and "b--ch" until "everything abruptly became quiet." It then says that he put her in the bathtub, exited the bathroom in a change of clothes, and walked over to an unidentified female on the bed and said "Now I want a pretty little white girl like you." A different friend entered the bathroom several minutes later and found Brown floating in the water, which promoted Gordon to take action.

He's never been charged in relation to her death before this, and his legal team believes the suit is "slanderous and meritless."

"Nick has been heartbroken and destroyed over the loss of his love," his lawyers Joe Habachy and Jose Baez said in a statement, CNN reported. "And it's shameful that such baseless allegations have been presented publicly. Nick has engaged civil counsel and intends to defend the lawsuit vigorously and expose it for what it is: a fictitious assault against the person who loved Krissy most."

These suspicions mostly started back in February when police questioned Gordon about the bruises on Brown's chest, but he had said that they were just a result of him performing CPR after he had found her. He was banned from visiting her while she was in the hospital, and he was not allowed at her funeral.