i think its about a couple who were in love, but one of them fell out of love. suddenly, everything the singer does feels wrong, because he feels like he has to really work hard to stay with her ("i'm not exactly sure what i should say, everything i do is a mistake"). but as long as he has her attention, and they're still physical, and she tells him how great she thinks he is, in his mind, everything's okay. but you can tell when he's singing the chorus that everything's really not okay. by the end of the song, when he's talking about all the things they'll never ever know, he's sort of come to terms with the fact that it's over for both of them.
i think its about a couple who were in love, but one of them fell out of love. suddenly, everything the singer does feels wrong, because he feels like he has to really work hard to stay with her ("i'm not exactly sure what i should say, everything i do is a mistake"). but as long as he has her attention, and they're still physical, and she tells him how great she thinks he is, in his mind, everything's okay. but you can tell when he's singing the chorus that everything's really not okay. by the end of the song, when he's talking about all the things they'll never ever know, he's sort of come to terms with the fact that it's over for both of them.