It probably does have to do with the sister's boyfriend, I think it's about some guys who have a friend (say, Martyn) who likes a girl whose, "words... will melt in your hand," and, "spoke words of wisdom." These guys try to get Martyn to talk to her/make a move, which is his mission. Unfortunately, he always wimps out, opting to hide in the basement, making, "many surprises await you," sarcastic.
It probably does have to do with the sister's boyfriend, I think it's about some guys who have a friend (say, Martyn) who likes a girl whose, "words... will melt in your hand," and, "spoke words of wisdom." These guys try to get Martyn to talk to her/make a move, which is his mission. Unfortunately, he always wimps out, opting to hide in the basement, making, "many surprises await you," sarcastic.
My two cents.