All these three do is hang out with each other lately!

Justin Bieber got into an intense nerf gun war with pals Kendall Jenner and Hailey Baldwin yesterday, and the girls certainly looked sexy as they posed alongside the The Biebs in his Instagram shot. "@kendalljenner why the need for two guns fool and @haileybaldwin good work today we were killin everyone. #nerfwars," the singer captioned the photo.

The Canadian sensation has denied dating either of the models, but that doesn't mean his ex Selena Gomez isn't having a complete breakdown over losing him! The "Come & Get It" songstress recently threw a fit at bestie Taylor Swift's 25th birthday, crying over JB while the rest of the partygoers looked on with pity. "She shouted, 'No one understands me! My boyfriend doesn't even understand me'," an insider tells Us Weekly, adding that bystanders — including guest Sam Smith — "just stared [at her]."

These hangouts must make Miss Gomez insanely jealous!