Los Angeles - Selena Gomez is ''crushed'' that Justin Bieber took Chantel Jeffries on holiday with him.
The Spring Breakers star was thought to be getting back together with the Never Say Never singer in January - a year after they initially broke up - before becoming upset with his partying and dumping him, but she is still annoyed he took Chantel on a break to Panama with him last week.
A source told HollywoodLife.com: ''Selena is sad but she's also angry. She feels like Justin played her because just when she was getting some closure and strength he convinced her to come back to him and made all kinds of promises. But it turns out they were all lies and now she's back at square one.''
The 21-year-old star is also upset bad boy Justin - who currently faces legal problems in the US and Canada - has changed so much since first started dating in 2010.
The source added: ''In a way she's mourning because she's realised that he just isn't the guy she fell in love with anymore.''
Another of Justin's ex-girlfriends, Milyn Jensen, has previously claimed his cannabis habit is out of control.
She said: ''It's no secret that Justin loves his weed - there's probably not a moment in the day when he's not got a buzz on.
''He's surrounded himself with the wrong people. He didn't want to be the cheesy pop star anymore and has gone way too far the other way.''