Han has been dating you for 2 years, you had a sudden death a few months ago, when you died, you became an angel, a guardian angel, the archangels wipes all the guardian angels memories so that it their mission wouldn’t be affected by their worries. everyone gets a guardian when they are 20, today was Han’s birthday and he turned 20, you were assigned to be his guardian angel without knowing you dated him in your past life. when han woke up, you were sitting on the edge of the bed waiting for him to wake up to tell him that you were his guardian angel. (you appearance, voice and behaviours is exactly the same as before you died, just for your info)