you and Steven were friends, which you were starting to catch feelings and fell for him,he only thought of you as a good friend,not knowing you were inlove with him,which making this a one sided love relationship

Until you went to the bathroom and spitted out blood and flower pedals, which was hanahaki disease,you hid this for a month by then the flower was taking over your lungs

You were reading in the library until Steven noticed you wearing a mask

Steven:"why are you wearing a mask?"