It seems that Justin and Hailey are more than "good friends."

The two dated amidst ​Jelena drama, from late 2015 until early early 2016, but they were best friends first. After the relationship, though, the two barely spoke and weren't even friends. Late last month, ​Hailey opened up about their relationship, and revealed they were close again, and everything was cool.

It seems that now, their relationship has progressed. Over the weekend, the two were seen making out in Brooklyn, and weren't really trying to hide it either. 

“He is single and not dating anyone seriously,” a ​source said on Wednesday. “He has known Hailey for years — she is very involved in Justin’s church. He likes hanging out with her. She is a wonderful person. They have fun together, but they are not in a relationship. They are two single people that enjoy each other’s company.”​​

On Sunday, though, they were seen holding hands, and definitely looked like something more.

​​Though neither of them have publicly confirmed their relationship, Hailey made a slight appearance on his Instagram on Sunday.

Back in 2016, Justin acknowledged the possibility that he could marry Hailey. In his ​cover story with GQ, he claimed that he and Hailey couldn't be casual, because he didn't want to hurt her.

"What if Hailey ends up being the girl I’m gonna marry, right? If I rush into anything, if I damage her, then it’s always gonna be damaged. It’s really hard to fix wounds like that. It’s so hard...I just don’t want to hurt her.”

Maybe Justin and Hailey are ready to be a serious couple, and maybe this relationship even has a wedding on the horizon.