Recently single Demi Lovato has used one of her songs to blast her former boyfriend Joe Jonas. The Disney star is believed to have slammed the middle member of the Jonas Brothers during a live concert on Thursday, May 27, in Rio De Janeiro, Brazil, when she changed the lyrics of "Solo", a song included in her second album "Here We Go Again".

During her performance of the song, the 17-year-old sang "why don't you stick to tambourine," instead of sticking to the original lyric which supposed to be "why don't you stick to acting." Although she didn't actually mentioned Joe's name, many are quick to link her words to the fact that Joe occasionally plays tambourine when singing with his pop band.

Demi Lovato and Joe Jonas first met on the set of "Camp Rock" in 2007. After being friends with each other over the years, Demi admitted in March that she is dating her co-star during a radio interview on "The Billy Bush Show". Asked "so you guys went from boyfriend-girlfriend to best friends?", the star of "Sonny With a Chance" responded, "No, kind of the opposite."

Days before the Rio De Janeiro performance, Demi has taken it to her Twitter account that she has broken up with Joe. "There are so many crazy rumors flying around today," her tweet read. "I'd like to clear a few things up. First, Joe and I did split but it wasn't over the phone. Things didn't work out but we'll remain friends."

Demi and Joe are still expected to be doing a tour together this coming summer. Joined by the rest of the Jonas Brothers and the cast of "Camp Rock 2: The Final Jam", the former couple will be on the road together to promote the Disney Channel original movie. The tour will be kicked off on July 27 in Dallas, Texas and wrapped on August 31.