When you were 5 years old and a shy little girl, Sam and Dean (Dean was 26 and Sam was 22 at the time) had saved you from being killed by the Vampires who worked the abandoned orphanage that you were placed in as a child and they helped put you into a foster care home and now, 15 years later (you are 20 now (still shy and have social anxiety), Dean is 41 and Sam is 37), you are sent to the bunker by Chuck (god) to be Sam’s wife and bride and Sam seems to be already head over heels in love with you when he sees you