It looks like Floyd Mayweather Jr. and 50 Cent's bromance and business relationship has been KO'ed by a Twitter fight. Mayweather went for the body Friday night when he ripped his former best buddy via Twitter calling 50 Cent "a male boxing groupie" and even dissed the rap star by saying "his album sales have declined." 50 Cent, whose real name is Curtis Jackson, got under the undefeated champion's skin when he kept tweeting that Yuriorkis Gamboa, who is also undefeated, wanted to challenge Mayweather. Gamboa is apparently part of 50 Cent's own SMS promotion team. It was really on after 50 Cent tweeted this: "I can't hang out with Floyd anymore, I'm tired of running away from manny pacquiao #smsAudio." The furious thumb action continued into the next rounds. "GAMBOA WANTS TO FIGHT FLOYD," Fitty tweeted. "I will put up an extra 20 million for the winner. He don't like it that Floyd pulled out. #SMSAUDIO" Fitty finished with a devastating left tweet: "You should have know [sic] not to go against me punk." Mayweather countered by repeatedly tweeting that the SMS stood for Snakes Maneuver Slick," "Sisters Managing Sports" or "Similar Mayweather Show." The two had been longtime friends and actually trained together. 50 Cent even got a New York promoter's license while Mayweather was in jail last spring. The two planned on teaming up to promote fights under the name The Money Team until things started to go sour. "TMT IS OVER the money team is no longer a team," 50 Cent tweeted on Thursday. "So it SMS promotions that's it thats all.SMSAudio ... I move the fighters to SMSpromotion cause the other half of the money team Didnt put up there $MONEY$. SMSaudio." 50 Cent took off the gloves when he announced this week that SMS promotions would put Gamboa up against Miguel Beltran on the undercard of the Manny Pacquaio-Juan Manuel Marquez fight on Dec. 8. That card is being promoted by Mayweather's chief rival, Bob Arum's Top Rank. Gamboa was signed by TMT but switched back to Top Rank and has semmingly hooked up with 50 Cent's SMS promotions as well. Who knows if this Twitter feud is real or some trap to get Mayweather to fight Gamboa but I was under the impression that Money and Cent went together like boxing and hip-hop.