I agree this song does not seem personal but I didn't get the "moved on and returned" vibe. To me, it seems like he is on his way out "the train takes me away from you." Though, this always seemed metaphorical. Her actions have torn him away, made it feel like he is on a train being lead away. I always got the image of a soldier off at war and his sweetheart at home has cheated on him and left him.
I agree this song does not seem personal but I didn't get the "moved on and returned" vibe. To me, it seems like he is on his way out "the train takes me away from you." Though, this always seemed metaphorical. Her actions have torn him away, made it feel like he is on a train being lead away. I always got the image of a soldier off at war and his sweetheart at home has cheated on him and left him.