Jealousy
It was early May when Rose heard Naila bragging in the girls loo that she had gotten Soorpius into a broom cupboard on the 3rd floor. The color drained from the younger girls face when Rose exited her cubical, flashed her a vengeful smile, washed her hands and swept out of the room.
The bubbling jealousy that was clawing at her gut didn't subside before she ran into Scorpius that evening, and despite the fact that she knew her boyfriend would never betray her, she couldn't help but snap at him when he asked her why she was in such a foul mood.
"Why don't you ask little Naila? You spend enough time with her as it is!"
The sincere confusion written all over his face confirmed what she already knew, that Naila was a filthy liar, but it did little to calm her jealousy as Alice Longbottom ushered her away from the couch and up to the girls dormitory.