Justin and Hailey's Relationship Timeline Will Make You Feel Like You're on a Roller Coaster

The duo first crossed paths back in 2009 when Hailey's dad, Stephen, took her to a Justin meet-and-greet. "This is my daughter Hailey," Stephen told Justin. "We've been enjoying your music."

Following their meeting, Justin and Hailey forged a friendship and were frequently photographed together. In fact, the pals hung out so much that Justin even had to shoot down romance rumors on his Instagram. "People are crazy," Justin wrote. "I'm super single and this is my good friend."

However, by the end of 2015, it appeared Hailey and Justin were more than just friends. Not only did Justin bring Hailey along on a family vacation, but he also shared a steamy Instagram shot of them making out during their trip.

Still, Hailey insisted they weren't together. "We are not an exclusive couple. He's about to go on tour," Hailey told E! News in February 2016. "Relationships at this age are already complicated, but I don't really like to talk about it because it's between me and him."

Justin then jumped back into the dating scene and was linked to Sofia Richie, Nicola Peltz, and on-again, off-again girlfriend Selena Gomez.

Hailey also did the same and was linked to Shawn Mendes after they showed up to the Met Gala together. However, the two were adamant that they were just friends.

In an interview with the Sunday Times, Hailey finally opened up about the status of her relationship with Justin. "I met him when I was really young and he was one of my best friends," Hailey explained. "Everybody knows that at a certain point in time that turned into something else, but that just happens when you're 18, 19. It was what it was . . . it brought both of us to the realization that we just work much better as friends. He's somebody I really cherish. Now it's a very mature situation. It's good."

Less than a month later, the exes had a special reunion in Miami. The pair were nearly inseparable, attending a church conference, having dinner together, and hitting up a nightclub. They were even photographed getting cozy at a hotel.

Yep, Justin and Hailey decided to give their romance another shot. Shortly after their Miami rendezvous, Us Weekly confirmed that they were dating again. "Hailey has always loved Justin and they have been best friends, so it's no surprise that they're hooking up again," a source told the publication.

Justin surprised fans everywhere when he popped the question to Hailey while vacationing in the Bahamas on July 7. Neither Justin nor Hailey have confirmed anything yet, however, Hailey was photographed wearing a giant engagement ring on that finger.