TMZ have reported that Princess Love attacked 34-year-old Ray J after waiting for him to return to his hotel from a strip club.
The musician, who famously made a sex tape with Kim Kardashian, reportedly told police that Princess went 'ballistic' before cracking several of his ribs, busting his lip open, and tearing a ligament in his knee.
Another person at the hotel told police Princess Love threaded to “kill” Ray J during the chaos.
When a hotel security guard saw him run from his room bleeding, the police were called to the scene.
Officers took Princess Love into custody, charging her with domestic abuse and battery, but Ray J reportedly paid her bail and $10,000 in legal fees.
Ray - real name William Ray Norwood Jr - and Princess famously have an on/off relationship.
When they broke up in October 2014, they became embroiled in a bitter custody battle over their dog Boogotti, but quickly got back together.
Then, just a few weeks later, Princess reportedly threatened to kill herself after seeing a photograph of Ray with model Karrueche Tran.
Karrueche's representatives later dismissed the claims, telling MailOnline: "This is not true."
Princess Love and Ray J have yet to release a comment on these latest reports surrounding their relationship.