Is Justin Bieber dating Hailey Baldwin? Recently, the "What Do You Mean" singer posted a number of pictures with the model while on vacation with his family in St. Barts. 

On Dec. 28, the 21-year-old took to Instagram to share a photo of him and the 19-year-old at the beach along with some family members, which clued fans in to the fact that the model was spending the New Year holiday with him.

Other photos showed the two hugging, and one picture that shows the two kissing appears to confirm that the two are dating.

The Instagram photos disappointed some fans who thought for sure that Bieber was getting back together with Selena Gomez. The on-again, off-again couple was last seen together in November at the lobby of the Montage Beverly Hills hotel where the "Sorry" singer was seen serenading the singer-actress with his rendition of "My Girl."

The two were also seen enjoying a midnight stroll following the outing, and in early December, Bieber posted two throwback photos with Gomez, which made fans think that the two might be dating again.

However, last month, reports claimed that Gomez has started dating One Direction member Niall Horan, and pictures of the two together began circulating the Internet. Meanwhile, it was also reported that Bieber had a short fling with Kourtney Kardashian, though neither the reality star nor the singer commented on the reports.

Baldwin has been previously linked with Bieber, but she vehemently denied that they were dating, claiming that they are just friends and that they have known each other since they were young.

While Bieber and Baldwin have yet to speak out about the nature of their relationship, a source told E! Online that the two have "a very tight relationship" and that they are both close to each other's family and care deeply about each other.

The insider said that while the duo has not labeled their relationship yet, Baldwin and Bieber are "very connected."