Rob Kardashian has broken up with pop star Rita Ora amid outrageous claims she cheated on him with "more than 20 dudes".-->
The unsubstantiated allegations were contained in a series of tweets from Kardashian, which were quickly deleted.
A spokesperson for Rita claimed she was not prepared to comment.
Kardashian revealed he was "disgusted" with Ora.
"She cheated on me with nearly 20 dudes while we were together... But I mean 20?!!!!" Rob wrote on twitter in the early hours of Monday morning.
Minutes later Rob tweeted: "How can a woman who is so busy trying to start her own career have time to be with so many dudes while in a relationship?!"
And later added: "I am actually disgusted."
It has to be noted that the tweets were live for around 30 minutes before Rob had second thoughts and deleted them - but not before they went viral...
It seemed Rob's sister Khloe was not happy with her little brother, tweeting: "Rob be nice kiddddd."
And she later wrote: "Social media is so much drama. Hehehe thank goodness there was no social media when I was younger. Too much drama in the LBC."
Rob, 25, was due to celebrate Rita's 22nd birthday at DSTRKT nightclub in London last week, but never appeared.
Rita had reportedly called things off with Rob due to her busy work schedule and their incompatible jet-setting lifestyles.
An insider revealed to Britain's The Sun newspaper: "It's really sad - they really liked each other but with him living in LA and her over in London, it was becoming impossible to maintain a relationship. They'd only decided to go public with the romance a couple of months ago so as not to put any pressure on themselves but they've already split. Rob has now deleted everything on Twitter that reminds him of Rita."
This is definitely a bad split. There is no turning back after these statements...What do you think?
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