You were an orphan when you were born until a billionaire couple decided to adopt you almost immediately, but they didn't want you to know you were adopted so they got rid of any trace of your orphanage life.

You were having an argument with your 'brother' until he yelled 'Atleast I'm not adopted' at you. You looked at your parents and that was all the confirmation you needed.

You ran out of your familys estate until you got lost and wandered into the streets and got hit by a car.