Selena Gomez - Selena Gomez laughing at Justin Bieber

Selena Gomez laughing at Justin Bieber

Selena Gomez is amused by Justin Bieber's recent bad behaviour.

The 20-year-old 'Who Say's singer - who dumped the 19-year-old Canadian star in January after two tumultuous years together - has reportedly been laughing at his immature actions which included arriving two hours late to a concert and threatening a photographer in London earlier this week.

A source close to the brunette beauty told HollywoodLife.com: ''Selena has kept an eye on Justin in the news and just laughed and laughed. She doesn't give a s**t anymore. Justin is crazy and she doesn't want to be his mom anymore. She feels so free and loves hanging out with her girlfriends. He's weird and she doesn't find his behaviour hot or anything. She just wants a man who has his s**t together, and not a weird boy.''

Selena was recently said to be looking for an older, more mature man to date.

An insider said: Selena is looking to date an older man this time. She finally sees how toxic it was to date a toddler like Justin.

''Selena is doing really well and feels like a weight has been lifted off her shoulders now that Justin is out of the picture. She finds Justin to be embarrassing since their breakup. He's turned into exactly the kind of person she'd never want to be with.''

Justin's recent antics, including reportedly kicking up a fuss when his 14-year-old friend Jaden Smith was stopped by bouncers from entering Justin's birthday party in a nightclub have ensured Selena doesn't regret her decision to break-up with him.

The insider previously added: ''For now Selena isn't concerned one bit with Justin's boyish antics. It's the last thing she cares about. Her sights are set on a much more mature man who won't embarrass her or cause childish fights for no reason.''