Ariana Grande comments on ex-boyfriend Jai Brooks' accusations that she cheated on him with Nathan Sykes from The Wanted... Subscribe to 4Music: http://bit.ly/SubscribeTo4Music Keep up to date with 4Music Website: http://www.4music.com/ Twitter: http://twitter.com/4Music Facebook: http://www.facebook.com/4music 4Music brings you closer to the hottest artists around right now. We give viewers a front row seat to see some of the world's best loved names in music and entertainment. We're music and then some on Freeview, TalkTalk & BT Vision 18, Sky 360, Virgin 330, and, of course, YouTube!