Rob Kardashian, the most emotional sibling on "Keeping Up The Kardashians" showed his sensitive again when he fired off a series of explosive tweets about his recent breakup with singer Rita Ora. Kardashian matriach Kris Jenner must have stepped in and advised him on publicity control or Rob musthave had a change of heart, but the 25-year-old deleted the tweets and his entireTwitter history before the twitter rant. "She cheated on me with nearly 20 dudes while we were together, I wonder how many she will sleep with now that we apart? But I mean 20?!!!," Kardashian tweeted. "How can a woman who is so busy trying to start her own career have time to be with so many dudes all while in a relationship?!"