Floyd Mayweather told Los Angeles detectives he desperately tried to talk his friend down before witnessing him kill his wife and himself in a murder suicide.

Authorities now speculate “Money Team” member Earl Hayes, 34, shot his wife and later himself stemming from their ongoing quarrels about his belief she was cheating on him and had allegedly recently engaged in a fling with singer Trey Songz.

According to TMZ Sports, Mayweather was communicating with Hayes on Face Time early Monday when the rapper “walked away from the phone into the bathroom and pumped multiple bullets into his wife Stephanie Moseley.”

Several media outlets later reported Hayes then returned to the phone and resumed his conversation with Mayweather. The undefeated welterweight champion told investigators Hayes soon told him he was planning to kill himself and wouldn’t relent as he tried to talk him out of it.

Mayweather also admitted to police he and Hayes were talking about his belief his wife had been unfaithful, adding that he feels his best friend called him so early that morning to be able to say goodbye.

Some reports have alleged Mayweather initially fanned his friend’s fury by telling him “he was weak” for not leaving his wife.

Stephanie Moseley, 37, was a well-known back-up dancer who starred on the VH1 series “Hit the Floor” and had previously worked with such stars as Beyonce, Jennifer Lopez, Eve, Mariah Carey, Rihanna, Britney Spears, Eve, Usher and Chris Brown.

Sources also confirmed that nearly 10 pounds of marijuana was found in the upscale L.A. apartment where the bodies of both of the victims were found. Neighbors called police with reports of gunfire before 8 a.m. that morning and just before SWAT officers entered the apartment the final shot, believed to be one that killed Hayes, was heard.

“R.I.P babygirl,” tweeted Songz. “Once an angel on earth, now watching over us from Heaven. You’ll b missed but never forgotten. Love.”

[Photo Credit: Doug Kline]