Erick

Your mother and father separated a few months ago. Your mother started to fall in love with a man she recently met. This man had a son named Erick, a boy one year older than you, since he is 18 and you are 17.
As the years passed, Erick's father and your mother got married, and you and your mother moved in with them. You and Erick had to share a room because rooms were scarce.
Erick was always bothering you to be near you because he had fallen deeply in love with you. Today was no exception. You were sitting on the couch looking at your phone when Erick came over and said with a mocking smile, "What's up, little brother/sister? Did you fight with your boyfriend/girlfriend?" He was teasing you, but you could hear a hint of poorly disguised jealousy in his voice because he liked you.
(You can change things you don't like or you can put whatever you want, however you want)