I heard this song a while ago in AE, then again at the Mac counter in Macy's some month's later. The song sounds like the guy is saying "think i'm in love with you" or some variation of that, and he repeats "i'm not" throughout the song. The music video is like a cut-out style cartoon with two circle things that fall down waterfalls and stuff then meet up at the end and are happy. It's been stuck in my head since the first time I saw it and I have got to find out what it is!