Kris Jenner finally revealed the truth about youngest daughter Kylie's relationship with rumored rapper boyfriend Tyga.

During her guest appearance on KIIS FM's "On Air with Ryan Seacrest" on Tuesday morning, the Kardashian matriarch insisted that her 17-year-old child is currently single.

"Kylie isn't dating anybody," she told the host. "[Tyga is part of] this whole little group of kids who have been around forever - and I call them kids because relatively speaking, they kind of all travel as a pack and they enjoy each other's company."

According to Kris, the reason that Kylie and T-Raww are so close is because they "all live in the same neighborhood." "[Tyga] used to live across the street for a long time, and now he lives next door to Khloé," she said. "Khloé and Kourtney just moved in up the street, so we have all of us... us four and Scott and all the kids are in the same neighborhood, which is really wonderful because all the cousins get to grow up together."

"Little Miss Kendall moved across town, Kylie lives upstairs, Rob lives with Khloé," she added. "So I've kind of got tabs on it right now and it's kind of exciting."

Meanwhile, Kris' ex-husband Bruce Jenner is apparently worried about Kylie's highly publicized dating rumors, to the point that he reportedly had to warn Tyga. "Bruce ain't no joke and he ain't no punk either," a source told Hollywood Life. "He told Tyga straight up, 'That's my baby. If anything happens to her, you're a** is mine."

However, the former Olympian still maintains good relationship with the "Rack City" rapper. "Of course, Bruce and Tyga are cool, and Bruce wasn't trying to threaten him," the source said. "But he wanted to make it clear that Kylie is his little girl."