Usian bolt's girlfriend model Kasi Bennett has finally broken her silence on Usain's cheating on her. And in just two words she had warned Usain to control himself. Just two days back she took to twitter and wrote - #selfcontrol. Usain has been living in London since scooping the 'triple triple' in Rio and leading quite a controversial life with new girl everyday. br br Subscribe to OneIndia News Channel for latest updates on movies and related videos.