Singer-actress Selena Gomez reportedly parties with ex-boyfriend Justin Bieber's friends to annoy him.

The duo were together for two years and parted ways in January this year. 

"Justin's friends look at Selena like a celebrity, so they still want to keep that connection despite Justin being hurt by her," radaronline.com quoted a source as saying.

"She purposely continues to associate with them just to annoy Justin," the source added.