“When Kendall and Justin Are Together, They Flirt So Hardcore. They Love Telling People They’re Just Friends, but They’re Playing with Everyone — There Is More to It. They’ve Hooked up in the Past and There’s Still Something There. They Just Like to Keep It Totally Secret, but a Lot of People Know There Is Something There. They Aren’t Fooling Everyone, ” a Source Tells Hollywoodlife. Com Exclusively.