"Sometimes when I'm naughty I think you're not my best friend anymore. Are you my best friend even when I'm naughty? The thing is, I want to be your best friend even when I'm a grown up but I'll get married... I want to marry a girl. Poppet! But when she's grown up she won't be my sister she'll be my brother. Will her hair be the same as mine when she's grown up?"
*runs away blowing a party streamer*