I had fun watching the video like a teenager.It is my first time to see the boy who was a PBB contestant.He is cute.I was just wondering why he does not have a shirt.But then reading the comments at you tube,I learned that he was asked to take off his shirt as part of the concert.I think that was a part of the show to make the audience more entertained . According to some You tube video comments, Katy wanted to give some message to her ex-husband named Russel Brand, whom she just divorced.Saying to him like, “Screw you. I’m free and I can do whatever I want to do. I don’t love you anymore.” Something like that..Back to the kissing scene,I was curious because I thought that they kissed each others lips.