Boxer watched rapper friend, Earl Hayes murder girlfriend

Floyd Mayweather confessed to watching rapper and friend Earl Hayes kill his girlfriend and then himself in a rage after Hayes told him that his wife, Stephanie Moseley had been unfaithful.

Floyd and Hayes were having a Facetime chat when he pulled out a gun andshot his wife.

TMZ reported that Floyd sourcs said: Earl said he was going to kill his wife. The champ was pleading with him to get a grip ... to no avail. Floyd will not say how much he saw, but he acknowledges he was a witness and heard everything.''

Mayweather is in mourning of his late best friend, but he still made way to see the NBA game between Cleveland Cavaliers and Brooklyn Nets.