Justin Bieber just looooves the Jenner sisters!

On Friday the pop star was all over Kendall Jenner in a handful of Instagram photos, but later that night he was all about sneaking around with Kylie! The 17-year-old reality starlet covered her face as she walked around with the Biebs, but seeing as she's got 2 inch talons that match her aqua hair, it was pretty difficult for her to go undetected.

Later Biebs posted a video on Instagram with Hailey Baldwin, who he dated earlier this year. He can't possibly be "just friends" with ALL of these girls can he? When we polled our X17online readers yesterday and asked if you thought the Biebs was banging Kendall, 55% of you said yes, 30% said no and 15% of you think it's in the cards. Interesting!

Lol why did we think this was gonna work @haileybaldwin

A video posted by Justin Bieber (@justinbieber) on