My thoughts;-Hong Ki have another girl besides Shin Hye -He's a two timer or cheating (well just in this vid)-Shin Hye suspects it already (thats explains why she took Hong Ki's phone when he's asleep)-Hong Ki is the one who breaks up with her -The girl that kissing Hong Ki is not Shin Hye but another girl (well this is just my thought not sure yet. So excited for the full video!!)