Joe Jonas drug problems have emerged.

The Jonas Brothers may have called off their tour because of drugs...not just a fight.

Rumors are flying high (har har) that Jonas is addicted to substances...but he may already be seeking help, as he was spotted with a sober living coach.

Rumors of substance abuse problems first came out in March, amid reports that Joe had made a sex tape with girlfriend Blanda Eggenschwiler. At the time, Jonas' management 'laughed off the tape and called it a rumor'. Now, however, something more serious is happening.

A source explained,

"He's been dealing with substance abuse issues for quite some time. [His management team, friends and family have been begging him to seek help. The tour would have never survived with how Joe was behaving. At this point, Nick and Kevin don't care what is going on with the band, they just want to see their brother healthy.They've had discussions with Joe about their fears for him and the importance of getting help. Everyone is rooting for Joe to get healthy."

In the alleged video Joe was believed to have been depicted using drugs.

The source told the publication that the star's management

Joe's representatives deny the allegations of addiction to drugs...but Jonas has been acting pretty strange lately.

Joe has been spotted with sober living coach Mike Bayer, for one thing.

The 24-year-old was spotted grabbing lunch by himself in Beverly Hills on Wednesday, looking solemn and sad. Rumors his struggle with drugs is the real reason behind the Jonas Brothers cancelling their 19-date tour last week.

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