You had a secret admirer, though you were blissfully unaware of said fact. You also didn't know that it was a close friend since Grade School.
Stiles Stilinski has been hopelessly and irrevocably in love with you since the third grade and had recently found a song that fills his thoughts with you and only you.
He had been listening to the song on loop day and night, when driving, reading, organising his crime board. It was playing at all times. It was his favourite song, it made him happy.
So now here he was, sitting at a table with his Scott, Lydia, and Allison in the cafeteria at lunch break with his headphones in.
The same song playing on loop whilst his eyes followed your every move lovesickly from across the hall, observing all of your usual mannerisms that he has memorised over the years.