Kylie Jenner and boyfriend Tyga are rumored to be fighting so much she has grown afraid he may seek to hurt her by selling off all her biggest secrets.

"Kylie's big fear is that he'll sell his interviews to the highest bidder and spill all the dirt on her and the entire family," a source told Radar Online, hinting that may be the only thing now stopping the teenager from pulling the plug on their long troubled relationship. "That's the only reason he's still around."

Word is the two did not establish a confidentiality agreement, and even if there was one in place, Jenner is convinced the "Rack City" rapper has grown so reckless that he would willingly violate it in order to take her down.

Jenner is rumored to be most concerned about racy footage, which the two previously recorded together in private. She is reportedly petrified over what his ex-girlfriend and her longtime nemesis Blac Chyna might do, if the footage were to fall into her possession.

"Right now Kylie's just hoping against hope that Tyga'll finally leave her alone and make it a clean break," a source added. "Things between them are so screwed up right now, it's not even funny."

That's all a far cry from where things between the two seemed just a few months ago, when they were rumored to be planning to elope as soon as she turned 18. As part of their grand plan, the couple was also reported to be planning to move away from Los Angeles in hopes of establishing a more normal lifestyle. Europe and New York were rumored to be among their most attractive destinations.

More recently, the two have hit a rough patch that caused Jenner to miss her boyfriend's 26th birthday celebration in Los Angeles.