Things are heating up between exes/rumored new couple Justin Bieber and Hailey Baldwin. The two went to see a movie together in Miami.

A Romantic Weekend Getaway

The two young stars dated very briefly back in 2015, but have remained friends in the intervening years. Witnesses spotted them hanging out together in Miami over the weekend and noted how they looked cozy.

Bieber and Baldwin were in town for the VOUS conference, which aims to empower young people through their faith. The said conference aims to empower the next generation of leaders. The two reportedly enjoyed a romantic dinner when the conference ended.

Their weekend kicked off on Friday with a low-key night at the W South Beach, surrounded by friends. They spent most of the following day sunbathing, with Baldwin spotted, by eagle-eyed fans, toweling Bieber off on their hotel balcony after a swim.

On Monday, the rumored couple was in Miami's hip South Beach area after catching a movie together. Both wore VOUS-branded sweatpants.

Bieber, 24, and Baldwin, 21, were out clubbing together throughout the weekend, according to sources. The two were finally spotted leaving Florida on a private jet together on Tuesday.

They're Really Just Friends

It was just a few weeks ago that Baldwin opened up in an interview with The Times UK, about her ongoing friendship with the "Sorry" singer.

"Justin and I were friends for a long time ... 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," she noted.

Baldwin also admitted that the two hadn't spoken for a while after their fledgling relationship dissolved, but confirmed they'd moved past all that nonsense at this stage.

The model, and daughter of actor Stephen Baldwin, noted that being in the public eye made her and Bieber realize they were better off as friends.

"He's somebody I really cherish. Now it's a very mature situation. It's good," she concluded.

When the two were still romantically involved, Baldwin gushed to ET about how much she loved Bieber, and how funny and sweet he was as a boyfriend.

The bad boy crooner reportedly reached out to his model ex following his latest split from on and off girlfriend Selena Gomez. At the time, a source revealed that there is absolutely nothing romantic about their relationship.

"There is nothing going on between her and Justin. She's not interested in Justin in the slightest and he's not interested in her," advised the insider.

Baldwin was most recently linked to another singer, Shawn Mendes, after the two attended this year's Met Gala together. Bieber and Gomez called time on their relationship back in May.