What is the music video where a girl finds out her boyfriend is cheating?

I saw a music video a little while ago where I believe starts off with the girl and her boyfriend. But When the girl goes home, she looks out her apartment window (which is a ceiling to floor window) and sees her boyfriend with somebody else or something like that. So during the video, all the guys "girlfriends" come to the apartment and together they make a hugh picture on the window of the aprtment announcing the guy is cheating and the girl that is currently with him looks disgusted at him.