By Amber Goodhand - Breaking Celebrity News News Editor

Rihanna has been partying it up on vacation with her friends and a new report claims her ex Chris Brown joined her over the weekend.

A romantic rendezvous between the two wouldn't be totally out of the question as the toxic lovers have secretly hung out in the past and even collaborated on remixes of each other's songs -- even though he's still on probation for beating her in 2009.

"Chris is staying on the yacht next to Rihanna's. He's got rappers Swizz Beatz and Ludacris with him and they've decided to film a music video too," a source told Britain's The Sun.

"It was a last-minute trip, but Chris wanted to see Rihanna. They have this weird addiction to each other and can't seem to stay away."

According to the report, Chris took a private jet to the South of France where Rihanna has been and chartered his own yacht for the week.

"She was really happy when he arrived. She spent all evening getting ready to see him. They waited till night so n