Rita, 22 and Rob, 25, dated each other secretly for months before going public about it. But they recently parted ways owing to work commitments. However, Rob, who is the younger brother of socialite Kim Kardashian, says Rita hooked up with many men while they were together, reports thesun.co.uk.
"I'm actually disgusted a woman could give up her body to more than 20 dudes in less than a year's time while trying to start a career. 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," Rob posted on Twitter.
"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?!" he added.