added: 15 Dec 2012 // by: Music-News.com Newsdesk
Rita Ora is apparently 'really upset' about Rob Kardashian's angry Twitter outburst.
The pair recently ended their relationship, prompting the 25-year-old reality TV star to hit out at the How We Do singer with claims she had been promiscuous.
His public act of vengeance has reportedly hurt the singer, who hoped they could maintain a friendship following the split.
'Rita was really upset,' a source divulged to British magazine Star.
'She cared for Rob and thought they could stay friends. She can't believe he is being so personal on such a public forum.'
Included in his venomous tweets were claims he had got Rita pregnant during the time they were together.
He also repeated several times that Rita had cheated on him and how shocked he was at her supposed infidelity.
"So you let me get you pregnant and you let others hit raw?" Rob fumed in one post.
"She cheated on me with nearly 20 dudes while we were together... But I mean 20?!!!! (sic)' another read.
Rob has since deleted all the offending messages.
The sock designer started seeing Rita in May, but they denied any romantic connection until October, when Rob used Twitter to post cosy pictures of the two stars together.
The 22-year-old singer is yet to comment on Rob's messages, but has opened up about their split, citing distance as the cause.
"I'm not going out with Rob. We were close for a while, but it didn't work because I was never there," she admitted recently.