Colbie Caillat and Gavin DeGraw Duet for New Romance Movie [AUDIO/VIDEO]
Singer/songwriters Colbie Caillat and Gavin DeGraw toured together last summer, making beautiful music all across America. Now the product of their time together is 'We Both Know', a romantic new ballad that has become the theme song for the film Safe Haven starring Josh Duhamel and Julianna Hough.