She also made fun of him when she heard of Bieber threatening a photographer in London earlier this week.
"She doesn't care anymore. Bieber is crazy and she doesn't want to be his mom anymore. She feels so free and loves hanging out with her girlfriends. He is weird and she doesn't find his behaviour hot or anything," femalefirst.co.uk quoted a source as saying.
"Gomez wants to date someone who is mature and intelligent. Gomez is doing really well and feels relaxed after dumping Bieber. She finds him to be embarrassing since their breakup. He's turned into exactly the kind of person she'd never want to be with," the source added.