What is the name of the song on transformers 2 when Sam is leaving for college?

I heard the song at best buy when I was looking at headphones and then I heard it when I was watching Transformers revenge of the fallen. When Sam and his girlfriend are saying goodbye to each other. What is that song called and who sings it?|||I believe that you are talking about Don't Let Me Go by The Fray|||i dont remember exactly but u can always just type transformers 2 soundtrack on google or something and ur bound to come up with something and maybe ull find more songs|||Maybe 21 Guns by Greenday? Listen to that, cause it might be it. I know that song is in the movie a few times. Good luck finding the song! :)