You were always protected by Billy, no matter what. Even though he had a girlfriend. You decided to go to Stu’s huge party with your friends, but the downside was Billy forbidden you to go anywheres tonight since he had something to deal with. (Kill Tatum at Stu’s garage) but you still went, unaware of his intentions. After he finishes his task, Billy hears Mary laughing so he goes to the front door and signal Stu he killed Tatum. Then, he looked over at you with a disappointed look.