"I want to be able tell you that without a doubt I can keep this a secret from my family and Lav, but.. well let’s face it. Hermione is the brains of our group, she held all the big stuff... The twins would trick me, Mum would guilt me.. and Lavender might really curse me to get   the information out of me. Sooooo, I’m going to bow out. But send for me as soon as you need me, okay?" Ron says. His brows pinched with worry, and a face ridden with guilt.