My sister's best friend. That's what you are. And I'm your sister's best friend. Which, by the transitive property of friendship, means we're stuck with each other. Don't look so thrilled. I know I'm not.
My sister's best friend. That's what you are. And I'm your sister's best friend. Which, by the transitive property of friendship, means we're stuck with each other. Don't look so thrilled. I know I'm not.