November 12th, 2012
11:55 AM ET
The status of his relationship with Selena Gomez is up in the air, but Justin Bieber's fans aren't wavering in their support.
The 18-year-old pop star took the stage in Boston on Saturday amidst reports that he and 20-year-old Gomez broke up about a week ago.
Just after midnight Sunday morning, Bieber expressed his appreciation for his fans' devotion.
"Thank u Boston. focused on the positive. #30MillionBeliebers with me. Im never leaving u because u r always there 4 me. love u," Bieber tweeted.
According to People magazine, Gomez broke up with Bieber last week because the relationship had grown "complicated" as a result of them being apart so often.
"She had some trust issues," a source added to the magazine. "It's not easy, but the relationship needed to end."
E! News heard the same thing, with a source telling the site that the famous pair's "crazy schedules" made it difficult for them to maintain a relationship.
"I don't know what to say," the teen star said. "I don't know what's going on in my life. To even assess that it doesn't make sense 'cause I have not made any comment."
CNN's reached out to reps for both Bieber and Gomez.
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