Misunderstanding

He was focused on her face, the face of the woman he loved. So when he saw her he walked to her, pinned her to the wall and started kissing her.
Why was she fighting him? Why wasn't she kissing him back?
A second later he felt a knee being forced into his crotch for the second time that week. Michael let go and sank to the floor, grabbing his crotch.
"What were you thinking, Michael! That I was my sister?" Padma asked.
'The Slytherins definitely had corrupted this one' Michael thought.
Both put their wands at their mouths.
"Scourgify!"