Now that Justin Bieber has gotten "hot and heavy" with his new girl, are things between him and Selena Gomez actually over?

Will Justin Bieber Make His Relationship With Selena Gomez Forever With An Engagement Ring?

HollywoodLife reported on Friday that a source close to Gomez said, "Selena is just in disbelief that Justin could move on from her so quickly."

This comes after reports that Bieber has gotten "hot and heavy" with his reported new girlfriend, Hailey Baldwin, 18.

Are Justin & Selena Attending Church Together?

He had apparently made a promise to Gomez that now has been broken due to his recent relationship. A source told HollywoodLife: "If he couldn't be with her, he wouldn't want to be with anyone else. That he would just focus on his spiritual studies and church, until she came back to him."

It looks like that has just been pushed aside as another source said that Bieber is "definitely on the rebound from Selena."

Rumor also has it that Gomez isn't taking Bieber's new relationship very well.

"Selena is just in disbelief that Justin could move on from her so quickly. It makes her think that everything he told her like how he couldn't live without her and that she was his princess soul mate was just a bunch of lies," the source said.

Apparently Gomez is "shocked and hurt" that Bieber is so serious with Baldwin "in such a short amount of time."

After such a long time of on-again-off-again antics between the two, it looks as though this may actually be it for the ex-couple.

Tags: Selena Gomez Justin Bieber