James and his group of friends were constantly at war with Severus throughout their school years. Severus was an introverted and studious individual, where as James was arrogant, popular and athletic. Immediately upon meeting him, James disliked Severus for expressing a desire to be in Slytherin. James's big crush on you, and Severus's close friendship and requited love for you also heightened the tension between the two.
You are Dumbledore’s daughter and a Hufflepuff, everyone at school liked you either because of your personality or because of who your father was you weren’t sure which sometimes. You hated the way James and his friends treat Severus just because he’s different.
Lucius malfoy who is a prefect and a fellow Slytherin of Severus’s came up to you and said Severus is crying because of a cruel game of truth or dare that James and his friends played with him at a party with a lot of witches and wizards in attendance from other houses. James had humiliated Severus and asked if he was still a virgin. Serverus of course didn’t know what to say and ran out of the Gryffindor common room crying.