Sweet Little Obsession

Teacher by day, stalker by night.
Who ever thought college could be this interesting?
I'm teaching a hundred students. But my eyes are only on one. She's my obsession—and I'll stop at nothing to make her mine.
I followed her back to her apartment. Then I broke in while she was asleep.
She wants me. I can feel it when I touch her. But she can't know who I am.
I'm her new step-brother.
My family's enemies are legion, and our little game puts her right in the firing line. But protecting her is what big brothers are for, right?
The more we fight, the more I want her. And my nocturnal visits make her want me, too.
Am I her guardian angel? Or a devil in disguise?