I just can't the groove of "I'm yours" out of my head. Makes me think of C every time I hear it or think about it :-)
It's written by singer-songwriter and--interestingly enough--avocado farmer Jason Mraz. Here's a video of Jason (with a stunning case of hat hair) being interviewed about his avocado farm on a British television show. After the interview, he performs "I'm yours" live. If you're primarily interested in the music, skip the youtube video to the 5:00 mark, roughly halfway through the video.