The story of the video isn't that he cheated on her, its that there relationship has turned into voilence, and there are moments like when he's sitting on the sofa screaming and shes got that fire in her hands where they remember when they first met and the good times (where he steals the alcohol and there kisssing outside). And there relationship is so dysfunctional that it hurts, he hits her and abuses her and she doesn't leave him, but they also feel passion. She also has a short temper that sets him off. And at teh end you can see him hurting her nd punching her while the place is on fire, but then there kissing and burning together. It shows that no matter how there relationship is, they love each other and will 'burn' together. The music video starts wth her finding the girls number on his hand, so instead of asking him about it, she flips out and lunges at him which leads to him restraining her, the video finishes with the way it started, them laying there, so the music video is basically showing what happens when they have an argument. I love this song, and video. Its really something special and shows both sides to an abusive relationship.