Source: <a href=https://www.google.com/url?rct=j&sa=t&url=http://www.take40.com/news/47564/ex-boyfriend-calvin-harris-stopped-rita-ora-from-performing-at-the-teen-choice-awards-&ct=ga&cd=CAIyGjViN2YyMDkwMTU0OTZhNWQ6Y29tOmVuOlVT&usg=AFQjCNHdGIb5naoWbzP2cSybUeCy-pUxaw class="colorbox" title="Ex boyfriend Calvin Harris stopped Rita Ora from performing at the Teen Choice Awards” >calvin harris