I'm in south of France about to see my little Rok star #avril get married I am so happy to be part of this special celebration— Mike Heller (@mikehellertr) June 29, 2013
No pictures will be sent since this is #avril wedding but I will tell you everyone is so excited— Mike Heller (@mikehellertr) June 29, 2013
But a source told US Weekly that Heller "never tweeted the wedding happened, just said he was on his way and excited for his friend." Another source said that the couple hadn't gotten married just yet.
According to E! News, the private wedding ceremony will take place Monday night at a location so secret they have yet to tell their guests.
"[Avril] picked Cannes because she's spent significant time in Paris in the past few years and summered in places like St. Tropez," a source told E! "She's very immersed in French food, ambiance and culture. It's her favorite place to be."
The 28-year-old Lavigne announced her engagement to 38-year-old Kroeger back in August.
2014: The Year in Music [PHOTOS]