Several offensive tweets were posted under Kendall Jenner's name on Tuesday, but did she really have oral sex with rumored boyfriend Justin Bieber?

The 19-year-old model's Twitter account appeared to be hacked, tweeting about her eating disorder, father Bruce Jenner's alleged sex change, as well as intimate relationship with the Canadian pop star. The messages were immediately removed, and she has yet to comment.

Jenner's social media posts follow recent reports claiming that she has secretly been hooking up with Bieber for weeks.

"They had a secret date at a Clippers game on March 20," a source told In Touch. "He was touching her leg and kissing her cheek."

"When Kendall talks about Justin, her face lights up," the source continued. "She could definitely be Justin's next real relationship."

The source added that the couple always had feelings for each other but never took it to the next level due to the "Keeping Up with the Kardashians" star's friendship with the "Baby" singer's on-again, off-again girlfriend Selena Gomez.

While the two have undoubtedly gotten closer since their racy photo shoot for Vogue's April 2015 issue, Bruce is reportedly furious about his daughter's romance with Bieber.

"Bruce adores Kendall and never approved of her hanging out with Bieber, so the fact she's now spending so much time with him has sent him into orbit!" a source revealed to RadarOnline.com.

According to the publication, although he has "tried everything, from sending emails and Facebook messages to confronting her about it in person," Kendall refuses to cut Bieber out of her life.

"Kendall's extremely strong-willed, and she's not listening to anyone about this, even her dad," the source added.