I know you asked me this a few days ago, but I haven’t answered it because I’ve been thinking about this thing Ed said about how his songs have particular meanings to him but he wouldn’t want to force anyone to interpret their meanings the same way - basically that the song can mean whatever you want it to mean in order to make it personal to you. That’s why I hesitate to explain an entire song to anyone. My suggestion to you would be to listen to the song (look up the lyrics if you can’t understand what he’s saying) and then decide what you think it means. There is no wrong answer.
I assume you asked about this song because I made a post about it the other day, but in that post, I actually said exactly what the song means to me already, and that basically boils down to the message, “You’ll never do this to me again.” But of course that is my own interpretation of it, and yours might be different. I look at it as a strong/empowering song, but my mom just sees it as sad. You might see it some other way.
When you decide what you think it means, I’d love to hear your thoughts. :D