The 21-year-old's mother Mandy and stepfather, Brian Teefey, have urged her not to get back together with the 19-year-old singer, reports femalefirst.co.uk.
"They told her Justin was a really bad person. They said she has to rid him from her life, otherwise they can't be part of her life - her new baby sister (Gracie Elliot) included. There were tears from everyone and Selena was devastated," a source told Life & Style magazine.
Even Gomez's friends are equally unimpressed with the "Baby" singer. "Her pals can't stand him, they think he's a loser," added the source.