Selena Gomez apparently branded Justin Bieber a "drug addict", and he sent her explicit photographs in a lengthy text message row.
The singer-and-actress - who is believed to have rekindled her romance with the 'Believe' hitmaker - lashed out at the 19-year-old star in a text message row which saw him send her x-rated nude photographs.
The messages, which were reportedly forwarded from a phone registered to Selena's stepfather, Brian Teefey, to one of her friends, begin with Justin saying: "Baby come on. I love you."
However, his on/off girlfriend responded with a furious attack, writing: "I don't buy that bull**** any more. I was honest with you and I gave you a second chance. All my friends were right, You're such an ********."
Justin replied: "You're all I need right now. I know I can make it right with you."
Selena hit back, writing: "U r a drug addict. U need help."
According to RadarOnline.com who obtained the messages, Justin then sent an explicit picture, writing: "Come on. Don't tell me you don't miss this."
Selena replied: "Stop it. You need to listen to Scooter [Braun, his manager] and go to rehab. U r sick."
The 'Baby' singer - who is being investigated by police over an egging attack on his neighbour's home - then sent another explicit photograph and wrote: ""Rehab?I make that ****** so much money."
Upon receiving the picture, Selena told the star they are "done" and suggested his friend Lil Za - who was arrested last week for drug possession following a police raid on Justin's home over the egging attack - had "taken the fall" for his behaviour.
She wrote: "And how can u let [Lil Za] take the fall of your actions. U need to grow ----- up. I hope you get jail time. U deserve it at this point."
After the 21-year-old starlet also advised the 'Never Say Never' star to "retire", he appeared to see red and launched a foul-mouthed attack on her.
He wrote: "------------!!!!! I need to grow up?! HA ok! Enjoy life with OUT ME!!! IAM DONE!
"Can't hear you over my cash, babe! You're only famous cuz of me. You know it. I know. Everybody knows. Bye ...!"
Meanwhile, it has been claimed there were drugs and drug paraphernalia - including two large cookie jars filled with marijuana - "strewn all over" Justin's mansion when police raided the property.
According to gossip website TMZ, the star also has a "dedicated smoking room" in his house.
However, police didn't seize any of the items because they were primarily looking for video equipment and it is likely a search of jars and other items would have exceeded the remit of their search warrant.