Selena Gomez reportedly "doesn't care" whom Justin Bieber dates.

The 21-year-old pop star and her on/off boyfriend have called time on their relationship once again and the "Baby" hitmaker has posted a number of photographs on Instagram with model Yovanna Ventura, who is rumored to be his new girlfriend, but Selena isn't bothered about their romance.

"Selena doesn't care who Justin is dating. All she knows is she's done with him and his immature behavior. He's all talk and no action," a source said.

Eyewitnesses apparently saw Justin and Yovanna together looking cozy in Vegas at the recent Floyd Mayweather fight and later on Venice Beach and Justin has previously been linked to Selena's former friend Kylie Jenner. "If he wants to date [a] teenager like Kylie or a wannabe model, then let him. She's done and moving on from the broken promises and drama," the source added.

Meanwhile, sources also say Justin is not over Selena and his new 18-year-old love is "just a rebound." An insider said, "Selena treated him like a regular person but all of these other girls treat him like a God and let him do whatever. I think they make Justin feel like he's in control and calling the shots."

Selena and Justin, 20, were spotted together at Coachella Valley Music and Arts Festival last month in California but have since had a "huge fight"and have called it quits.