AceShowbiz - What's going on? Rob Kardashian has been publicly flirting with Natti Natasha on Twitter over these past few days, but it looks like the "Keeping Up with the Kardashians" star doesn't set his eyes on the Dominican singer only. Rob recently was caught exchanging lewd messages with Evelyn Lozada on Twitter.

The "Basketball Wives" star was the one who started things off, claiming that the Arthur George Socks owner "has a big sausage." Rob then quote-retweeted the post and wrote in response, "And you a squirter." Their interaction clearly caused social media frenzy, with many doubting that they were the one who tweeted that post themselves. "They both got hacked lol," one said.

Rob and Evelyn did not write to each other again after that. They have also since deleted the tweets.

This arrived just hours after Rob and Natti exchanged flirty messages while celebrating Father's Day. Their interaction didn't go unnoticed by sister Khloe Kardashian, who jokingly reacted, "Rob what's going on here?!?! Who is this girl?" Her younger brother has since replied to the tweet by writing, "Do I know you?"

The siblings continued getting playful after that, with the "Revenge Body with Khloe Kardashian" host jokingly threatening Rob, "Don't make me pop up on your a**." But the 32-year-old wasn't afraid at all and taunted his sister, "Pop off then!" In response, Khloe said, "Coming over then. I'll see you soon."

Rob and Natti's dating rumors first emerged after the former was caught shooting his shot on a picture of the Latina beauty going topless in a bathroom. They continued flirting on Twitter after that, with his sisters allegedly being supportive over their possible romance. This is because Natti "has her own career going on, she's already a success and her star is on the rise, they definitely see that as a big plus."