Boxer Floyd Mayweather Jr. is reportedly having a very hard time dealing with the tragic deaths of reality star Stephanie Moseley and rapper Earl Hayes. Early Monday morning, Hayes allegedly shot Moseley in their Los Angeles apartment and then killed himself.

It's believed that the couple was arguing because Hayes thought his wife was cheating on him with another rapper. According to TMZ, Hayes and Moseley were in the apartment by themselves but Mayweather allegedly witnessed the entire crime via FaceTime.

Sources told TMZ that Hayes called the boxer upset that Moseley was reportedly being unfaithful. Allegedly, Hayes kept yelling that he was going to kill his wife and Mayweather was trying to calm him down.

TMZ reports that Mayweather supposedly witnessed the rapper pull out a gun, allegedly shoot Moseley and then turn the gun on himself. Sources said Mayweather acknowledges that he heard everything that went down in the apartment but won't say how much he saw.

The boxer has been quiet on social media but did re-tweet a post by rapper 50 Cent.  

"RIP @floydmayweather you are my little brother. All can think about is what you said to me up stairs," the post read. "Don't you ever do nothing to your self no matter what champ. We can fall out and fight or what ever,but I don't want to see you go out like that. #SMSAUDIO #POWER #FRIGO."

News of the shooting broke Monday evening. According to reports, neighbors in the complex said they heard a woman screaming early in the morning followed by the sound of gunshots. Some neighbors said at least 10 shots were fired inside the apartment.

When police arrived at the scene reportedly both Moseley and Hayes were already dead. Their bodies were found in a back bedroom of the apartment. Moseley was a backup dancer for multiple celebrities, including Chris Brown and Britney Spears, and appeared on the VH1 show "Hit the Floor."

Immediately after news broke, Brown tweeted his condolences writing, "RIP baby girl. Danced with me on tour and was always the coolest person. My prayers go out to you and HAZE family."