But we're a little confused with the interaction.
"Run forrest fun haha" Justin wrote on a recent sexy shot of Hailey.
You know that old saying that if a guy teases you he likes you? Well we're getting those vibes from this comment.
On the other hand, he could totally be making fun of her.
For Hailey, she realised that her high-profile relationship with Justin made her learn a lot.
"It brought both of us to the realisation that we just work much better as friends," she told the Times.
"He’s somebody I really cherish. Now it’s a very mature situation. It’s good."