Floyd Mayweather, 50 Cent Beef Intensifies [PHOTOS]: Ray J 'Caught in Bed' Kissing Boxer's Sexy Girlfriend Princess after Viral Instagram Pics!

Earlier this week, 50 Cent refueled his ongoing beef with undefeated professional boxer Floyd Mayweather. Check out these viral Instagram posts where the Get Rich or Die Tryin' rapper calls-out one of Mayweather's many "girlfriends" on secretly hooking-up with Kim Kardashian's ex, Ray J!

50 Cent: "I GOT FLOYD, I GOT RAY J At the same damn Time."

As Mstars previously reported:

The lovely lady in this pic is known as Princess... allegedly one of Mayweather's several "infamous" girlfriends. According to MediaTakeOut.com, Princess is Mayweather's third main squeeze... coming in after fiancee Shantel and baby mama Melissa.

Fifty also posted:

50cent: "@Floydmayweather don't feel Stupid some of them belong on a TRACK that's all #smsaudio."

50cent: "THOT ALERT look at the dog Lmao #smsaudio."

50cent: "This is Floyd message to the girl lol."

50cent: "Ray j said my time is money. LMAO."

Crazy stuff. Ray J might have a LOT to explain to Mayweather... because according to MediaTakeOut.com, there's now visual PROOF that the "I Hit It First" crooner slept with Princess!

According to the infamous gossip webloid MTO, there's exclusive photos of Princess kissing Ray J while snuggling in bed (while she was still dating Mayweather).

As MTO puts it:

Floyd met Princess while she was "dancing" at Spearmint Rhino in Las Vegas. The two hit it off and Money May immediately spoiled her rotten... buying her anything and everything her heart desired. Dude gave her money, fame... and some CHAMPIONSHIP D*CK. And in return... she pulled a SCANDAL MOVE on him.

Check out the sexy "hook-up" photos here. So, what do Mstars readers think?