I think he means that he is deeply inlove with a girl but is very shy and nervous around her "when you walked away I breathed your name" while at the same time she's inlove with someone else "I couldn't watch you, wishing for something that seemed more impossible by the day" this could possibly be her ex wich would explain the "we can never get back what we choose to throw away" and by the way that she's treating other men opposed to him he is further withdrawing himself "everytime I saw your expression I only seemed to run further away"
I think he means that he is deeply inlove with a girl but is very shy and nervous around her "when you walked away I breathed your name" while at the same time she's inlove with someone else "I couldn't watch you, wishing for something that seemed more impossible by the day" this could possibly be her ex wich would explain the "we can never get back what we choose to throw away" and by the way that she's treating other men opposed to him he is further withdrawing himself "everytime I saw your expression I only seemed to run further away"