Rob Kardashian Threatens to Bash Kim and Kanye West

Rob Kardashian sounded off on his sister Kim Kardashian on the latest episode of "Kourtney & Kim Take Miami" where he spoke about exposing her relationship with Kanye West and hoping that a past adult film haunted her.

In the episode of the E! Network reality television show, 25-year-old Rob received some advice after breaking up with British singer Rita Ora. Last year, the sole Kardashian male in the immediate family took to Twitter to speak about Ora's promiscuous ways.

Kardashian's 33-year-old sister Kourtney advised him against tweeting such personal matters while 32-year-old Kim echoed her sentiments.

"Don't post anything else - everyone has problems," Kim told Rob.

However, Rob did not seem to want the advice from his currently pregnant Kardashian sister. Instead of automatically heeding her advice, he decided to send Kim a hurtful text message about her claim to fame- an explicit adult recording. The text message was sent after Rob asked Kim if her rapper boyfriend could do a song with his friend and she refused.

"I hope your sex tape haunts you for the rest of your life, and I'm going to publicly bash you and Kanye," Rob wrote Kim in a text message that was shared on the family's reality television series Sunday.

Although the family seemed to be embroiled in a feud for much of the episode, they later patched things up when the Kardashian brother decided to apologize for being rude to his sister about her past and current relationship.

"I wanted to apologize," Rob told his sister in a phone conversation while she was dining with her boyfriend. "Obviously the things I said to you in the text message, I was just being mean."

Kim decided to forgive her brother after being on the receiving end of his negative comments.

"I appreciate you being mature and calling me instead of dragging this fight out," she told her brother.

Rob has publicly stated that he was happy for Kim, who is due to give birth to her and West's child next July.

"It's beautiful. It's a blessing. The new year, we've got another child coming, so that's great," Kardashian said of his sister in an E! News report earlier this year. "Kim's never had a baby, so it's going to be a beautiful blessing."