You and Draco were in a relationship, toxic but you both loved each other a lot

One day, he accidentally hurt you physically after an argument about something stupid. He decided to broke up with you for you own good.

He felt in a deep depression without you. He start being mean again, smoke again, drink again

He was lost without you

You went out of your class with Harry and Ron, your best friends, and saw him beat someone weaker than him with Mattheo, Blaise, Theodort, Regulus and Tom