Rob Kardashian used his Twitter account to vent out his frustration in a tweet where no names were mentioned but was apparently meant for his ex-girlfriend, Rita Ora says reports in E! news. The tweets were later deleted.

Kardashian tweeted the message Monday morning before deleting it abruptly: "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?!!!"

After the outburst, speculation arose that Kardashian the girl he referred to in the tweet was Ora with whom he was speculated to have ended his presumed romance last week. But soon after Kardashian tweeted to clear the rumors that he did not refer to Ora in any of his tweets.

"Just so we clear I never once mentioned 'Rita Ora' in any of my tweets or even used the word 'whore' and I never would. I Respect Women," tweeted Kardashian, according to E! News.

He further wrote showing a sign of sympathy to the 22-year old singer, reports E! news: "Sad that the media created negativity for a young artist new to the game that is working so hard to make it. Never mentioned any names."

"I speak truth. I'm a very Real dude and everything I say I mean...But never called anyone specific a whore and said any names. You all did."

With all these speculations, Kardashian's half sisters Kylie and Kendall Jenner had no idea about who the tweets referred to, according to E! news.

"I actually talked to him today," Kylie said about the whole situation, in a E! news report. "I was like, 'What's wrong, Rob? Are you OK?' He's like, 'No, I just want to put out some inspiration quotes.' So...he's just trying to put...some inspiration stuff out there."

He's like, 'No, I'm fine,'" she told E! News. "Maybe he's hiding something but I don't know."

While Ora is keeping low and staying focused on her music and as she had cleared previously in the October issue of UK edition of Glamour blaming their busy schedules for the break up but they continue to be friends.

"I'm not going out with Rob. We were close for a while, but it didn't work because I was never there," the 'Hot Right Now' singer told Daily Mail. "I was like a ghost. I used to get so frustrated with myself and then wonder why I was angry, so I decided it was best to keep it friendly - especially at the moment, when there's so much going on."