To me, this song is about a guy who finally realizes that he needs to move on from the girl he was with. She treated him badly, and "all he'd do is wait and wait". But this song is basically him coming to terms with the fact that they are over and she will never truly be his again. It is a song about the end of a relationship and accepting that it's over. The wind blowing is basically signifying that now they are nothing more than a gust of wind, or a passing memory in each other's lives and that is all they will ever be now. He is saying that she can try all she wants to get him back ("you can scream"), but it won't work because now she is nothing more than something in his past ("there's just echoes").
To me, this song is about a guy who finally realizes that he needs to move on from the girl he was with. She treated him badly, and "all he'd do is wait and wait". But this song is basically him coming to terms with the fact that they are over and she will never truly be his again. It is a song about the end of a relationship and accepting that it's over. The wind blowing is basically signifying that now they are nothing more than a gust of wind, or a passing memory in each other's lives and that is all they will ever be now. He is saying that she can try all she wants to get him back ("you can scream"), but it won't work because now she is nothing more than something in his past ("there's just echoes").