Amid rumors that he has been "stepping out on her," Kylie Jenner has taken up momager Kris Jenner's offer to have boyfriend Tyga followed.

Radar reports with Kylie now weary of all the seemingly never-ending rumors and her family's admonishments about Tyga not being "the perfect guy," she just wants to know what he does and where he goes when they are apart.

Just last week, the 25-year-old hip-hop star was spotted cruising in a limo with what witnesses have described as a hot blonde.

"Kylie's been in denial about Tyga's extracurricular activities," a source said.

"She now wants to find out the truth for herself and has taken up Kris's offer to have him followed. She wants to know where he goes, who he's with and for how long when he's not with her. It's tearing her up inside and she's terrified about what she's going to find out," the source added.

Only days ago, a California judge ordered the rapper to make a "hefty payment" to a woman who once accused him of sexual battery.

Model Alison Brown sued him and several others charging he "coerced young and impressionable underage women to pose nude" for his "Make It Nasty" video.

The two sides later reached terms on a settlement, calling for the rap star to pay her $50,000 to have the suit dropped, but last week Brown was back in court seeking the balance of what she alleges she is still owed.

In her initial complaint, Brown also claimed she was invited to a Hollywood Hills mansion to take part in the video shoot, and once she arrived she and a group of other women were given copious amounts of alcohol.

Tyga and Jenner are rumored to have been dating for several months and Hollywood Life reports the two have contemplated eloping when she turns 18 later this month.