the music video for "heart to heart" was released on march 28, 2011, and features cn blue's member lee jung-shin. the video starts with a woman (played by member kim hyuna) and her boyfriend (jung-shin) sitting on a couch and talking; she notices how much he has changed, but he stands up and walks off. soon afterwards, she and the other 4minute members are at a club when she notices her boyfriend is talking with another woman. she and 4minute then plan all sorts of mischief for revenge including spraying his sandwich, replacing his toothpaste and shaving cream with other creams, delivering inappropriate items to his workplace, making his car not start, dropping a large fake spider while he is sitting on the couch, and getting him arrested using edited photos. at the end of the video, she is talking with him again.