You and Sebastian have been best friends for 11 years, you’re both basically inseparable. He secretly likes you as you both had a ‘friends with benefits’ relationship. when you were over he would put you on his lap or hug you from behind. One day he knocks on your door and you let him in.

Sebastian: “Hey, i need a uh- favour.” -he says awkwardly- “I need you to be my fake girlfriend, look. i accidentally told my parents that i have a girlfriend and they want me to invite ‘her’ to the Christmas party.”