Getting nasty: Rihanna and Chris Brown, pictured in April, have taken to Twitter to accuse each other of playing the field in thinly veiled tweets

The on-again off-again couple finally seem to have called it quits last week.
But Rihanna, 25, and Chris Brown, 24, have taken to Twitter to voice their mutual contempt for each other.
The music superstars sent out thinly veiled tweets on Thursday and Friday seemingly accusing each other of playing the field while they dated
She started it: Rihanna uploaded this picture to her Instagram account on Thursday, which perhaps alludes to Chris cheating
Rihanna started it off, uploading an Instagram picture on Thursday with the words:
'If I drop all my hoes for you and we still don't work out you owe me some hoes.'
Although the meaning isn't clear, the picture insinuates that Rihanna either dropped all her friends when she was with Chris or that he was unfaithful to her.
Chris then upped the nastiness factor by tweeting on Friday: 'She's not mine if she's everybody elses.'
Flat out accusation: Chris followed up with a tweet on Friday that seemed to suggest that Rihanna may have seen other guys

The ex couple also sent out tweets on Wednesday that appeared to be directed at each other, with Chris tweeting:
'Sometimes loving someone is too much! So loving from a distance will help everyone grow! Be blessed. Live ya life!'
Rihanna then tweeted her own message a short while later, stating:
'Settling is not an option! Nothing less than 100% loyalty, honesty, and respect!! Love ain't for kidz #butimsleeptho'
Moving on: The pair, pictured at the Grammy Awards in February, have both been linked to ex partners in recent weeks
Chris' Friday tweet comes after reports that Rihanna was partying with ex JR Smith on Tuesday after her show in New York. 
But the rapper isn't blameless himself after he spent his birthday celebrations last weekend partying with ex-girlfriend Karreuche Tran.
The rapper recently made some kinder comments about the break-up during an interview on the Kyle and Jackie O radio show
'I'm always going to love that person ... [but] I can’t be focused on wife-ing someone that young — I need to step forward and be a man and be the best Chris Brown I can be,' he said.