The 20-year-old star posted a selfie of himself with Jeffries, with whom he was apparently in a relationship with, wrapped around one arm and model Catherine Johnston-Paiz because he wanted to hurt Gomez, 21, reported Hollywood Life.
"Justin posted those pictures with Chantel (Jeffries) to hurt Selena," a source said, adding, "He knows how to push her buttons."
"Selena always comes back to Justin when he treats her mean so there's no reason for him to change," the source said.