You shouldnt have made that bet with your bully. Now your gf is free use for him and his friends
These bullies used to shove my husband into lockers. Now I shove their cocks down my throat and between my tits while my husband watches. Some things never change.
At This Point It Was A Family Tradition To Submit To Your Bully. So, On Her 18th Birthday, You Watched Your Older Sister Training Your Younger One How To Properly *Love* Your Bully~!