I think it's rather about someone who used to live in a bad environment, surrounded by evil people, maybe by social margin, and one day he breaks out of it since he realises they've been simply deceiving him. "It's all I know, you broke the vow" - maybe it means they promised him he'd become superior to everyone else when he joins them, but he noticed in a time that they only pull him down and make him someone like them - someone who simply debased himself. And he doesn't want to live this way.
"I once changed my style / When they said hello I said goodbye" - this means perhaps they're trying to make him return to them, but he finally keeps his eyes open to see what were they doing with him.
And "the city of glass that I live in" - maybe it means "I've been living a lie"? Or maybe he wants to say through this that the life he used to live is worthless and fragile, just like something made of glass.
I think it's rather about someone who used to live in a bad environment, surrounded by evil people, maybe by social margin, and one day he breaks out of it since he realises they've been simply deceiving him. "It's all I know, you broke the vow" - maybe it means they promised him he'd become superior to everyone else when he joins them, but he noticed in a time that they only pull him down and make him someone like them - someone who simply debased himself. And he doesn't want to live this way. "I once changed my style / When they said hello I said goodbye" - this means perhaps they're trying to make him return to them, but he finally keeps his eyes open to see what were they doing with him. And "the city of glass that I live in" - maybe it means "I've been living a lie"? Or maybe he wants to say through this that the life he used to live is worthless and fragile, just like something made of glass.