Please help me. Usually I can fend for myself when it comes to identifying music, but this song is eluding me. I don't even like it, but it's really catchy and I need to know the title. The person in the video is a girl with dark orange hair, and the video is shot in color, but the background is black and white. Through the whole video, she is near a person, but you don't who it is because the close are suspended in the air and you only see the clothing. At the end of the video she breaks some things and colored powder pours out. Then she meets a real person, a typical generic music video male. I only remember some lyrics, and I know the choruse she sings "My heart. My har-har-har-har-har-har-heart." She uses the same scheme for other songs but that's all I remember. Sorry that it's vague, but please help.