18-year-old Jenner, who broke up with the 'One Direction' singer three months after she started dating last November, feels he is the right one for her and she should get back with him, reported the Daily Star.
"The few times Kendall's seen Hazza (Harry Styles) since their split have made her all the more desperate to get her claws into him again. She believes he's 'the one' and has been telling all her friends they are meant to be together," a source said.
"She bitterly regrets agreeing to call it quits and is certain she can rekindle the fire between them," the source added.