Even though the girls are portrayed as lesbians, I do not think their songs completely have to be put in that box. It makes more sense when you look at the songs then.
Think of the one singing is a girl and the person she is singing to is a boy. The boy can never be hers because he is interested in his own gender. They might be friends even, but there is the onesided crush. That would be the cause of torment for the one singing as the feelings were doomed from the very start.
Again, this can be portrayed as a homosexual individual in love with someone of his or her own sex who happens to be straight and taken.
That is my view point at least.
Even though the girls are portrayed as lesbians, I do not think their songs completely have to be put in that box. It makes more sense when you look at the songs then. Think of the one singing is a girl and the person she is singing to is a boy. The boy can never be hers because he is interested in his own gender. They might be friends even, but there is the onesided crush. That would be the cause of torment for the one singing as the feelings were doomed from the very start. Again, this can be portrayed as a homosexual individual in love with someone of his or her own sex who happens to be straight and taken. That is my view point at least.