Rihanna and Chris Brown are rumoured to be enjoying a short break together.

The on-again/off-again couple - who reconciled in recent months even though the 23-year-old 'Don't Wake Me Up' singer is still on probation for violently beating her in 2009 - has sparked speculation they boarded a private jet to spend a few romantic days together ahead of Chris's upcoming tour after issuing a series of mysteriously similar tweets.

The 24-year-old 'Diamonds' singer wrote on her twitter: ''B***h I'm phresh out the runway #UNAPOLOGETIC (sic)'' on Saturday (03.11.12) shortly before he tweeted a picture of himself and a few friends in front of a private jet.

According to HollywoodLife.com Chris may have invited her to join him for a weekend away before his tour of Europe and Africa starts later this month as the couple have both been extremely busy lately and he wants to do whatever it takes to keep her happy while he is away.

A source said: ''[Chris will] miss Rihanna. I know they will talk all day and text back and forth. Then, [he's] going to get back home and have a $5K cell bill. It's cool though. To him, Ri's worth a whole lot more, so he ain't tripping.

''That's his girl and they're talking and trying to squeeze in as much time together as possible before he jets out of here.''

Chris - who is due to start his tour on November 14 - is due back in Los Angeles tomorrow (05.11.12) to launch his new charity the Symphonic Love Foundation.