He shouldn't have read it. He should have never even looked at it. It wasn't really his fault, her diary had just fallen and opened up to that particular page who was he to turn down fate?
He couldn't help but smile widely as he watched her and Ron argue at dinner that night. He had a dirty little secret that Ron would find out soon enough.
She was finally going to break up with Ron that night and pursue her true love, despite any obstacles. Fred decided he wouldn't make it hard for her.
He had waited long enough.