The Gang of Four are growing up

The Gang of Four are growing up. It seems to Polly that they spend most of their spare time with their boyfriends, and even when they are together, all they do is talk about boys.
Polly's not sure whether boys really are her. Wasn't it better when it was just the four girls and they could shop gossip and not have to worry about boys being around? Polly wonders whether she’ll ever really understand what it’s all about...