Fefe Dobson does not play around when it comes to cheating boyfriends. The Canadian rocker goes after a loser ex in her new video "Ghost" after catching him making out with another girl. Although the ex tries to move on with his new relationship, Dobson doesn't let up.

"My video 'Ghost' is about me catching my man cheating and then me driving him crazy 'cause I'm haunting him," Dobson told MTV News. The clip features the star wailing at her former beau from his bedroom ceiling, rocking out on top of his convertible in a leather suit, and taunting him in front of a burning mattress.

In the video, Dobson harasses her bad boy with the type of vengeful abandon that many wronged lovers dream of. However, Dobson said that doing the crazy-ex thing wasn't easy. "There's a scene where I'm standing in front of a burning bed. It was really burning -- it wasn't a green screen. I was like, 'I'm not gonna do this!' and I hear [the director] going, 'Get in front of the bed!' " she recalled. "I didn't want to do it but I did it. I didn't, you know, get set on fire -- which is important!"

Even though he was brought in to make her life harder onscreen, Dobson said that filming with her "Ghost" boy toy was the easiest part of making the video. "He's cute, so it was easy," said Dobson. "It wasn't that hard."

Check out the sneak peek video of Fefe Dobson's "Ghost" and let us know what you think in the comments below! We will air your comments on MTV this Friday, June 25!