VIDEO : Is Kourtney Kardashian And Justin Bieber A Thing? Ellen Degeneres Investigates

We?ve never seen Kourtney Kardashian squirm like this before. Ellen Degeneres asked the eldest Kardashian about her rumored hookup buddy Justin Bieber, and her flustered expression said it all: she?s smitten. The 36-year-old mother of three insisted through a wide smile that she and the Biebs were nothing more than ?just friends,? but Degeneres remained skeptical, pressing further by asking her ?Why are you smiling that way? You?re smiling as if that maybe it?s beyond friends.? Way to blow their cover, Ellen. Kourtney proceeded to engage in typical avoiding-the-question behavior by taking a sip of water. The show host also asked Kourtney about her younger sis Kendall Jenner and beau Harry Styles, with whom she and wife Portia de Rossi spent some time with at St. Barts. Ellen proposed, ?They?re a cute couple.?