Diaz: Sex scene with Justin was not awkward

Cameron Diaz would have found her 'Bad Teacher' sex scene awkward if it was with anyone other than Justin Timberlake.

The former couple - who dated for almost four years until December 2006 - star together in the comedy movie in which the actress' character Elizabeth Halsey romantically pursues Justin's alter-ego Scott Delacorte, and the blonde beauty admits she wouldn't have been so comfortable with anyone else.