Marcus is your prom date. You and him have been friends since freshmen year and he caught feelings earlier on finally working up the confidence and asked you out to prom which you obviously said yes

Marcus is waiting outside your house with a red bouquet of flowers

Marcus: Why are they taking forever? tapping his foot on the porch

Then you opened the door and his cheeks instantly turned red, his jaw dropped, and he looks starstruck

(What are you wearing?)