Justin Bieber is "glad" he and Selena Gomez had a break up, Us magazine reports, leaving many fans wondering if her time in rehab may have contributed to their split.

The magazine also reports that Selena Gomez wanted to break up with him because she found out he was cheating on her.

"She saw messages and pictures from other girls that made her a hundred percent sure that he's been cheating on her," a source told the magazine.

"They're not talking anymore. She said she was only giving him one more chance and that was it."

Selena Gomez's parents are convinced that she needs a break from Justin Bieber and want her to return to rehab.

"They have always wanted her to take rehab seriously because she never has, and that would be the best thing for her. Her parents have been weak trying to make it happen, but are now trying to buckle down on it, even using her little sister to motivate her," a source told Hollywood Life.  

"Her parents have begun using the fact that Selena will not be able to see her sister until she gets help and that seems to be working."

Selena Gomez made Twitter and Instagram fans go wild after she was spotted dating Orlando Bloom in Los Angeles, leaving many fans if Justin Bieber's girlfriend is getting revenge for her boyfriend allegedly leading her to enter rehab for their wild, partying ways.

The "Slow Down" singer and Orlando Bloom were spotted outside of the Chelsea Handler show in Los Angeles, TMZ reports.

"Selena actually looked really happy," a source told the site. "They both seemed in great spirits."