Kill Switch by Penelope Douglas

He held me quietly for a moment, and then spoke low but
clear. “My kind of fun has a price,” he whispered. “Better
enjoy myself while I can.”
“Why me?”
I mean, really. Not that I wished him on anyone, but was it
because I was blind? Because he thought I was an easy target?
“I don’t know,” he said, and I finally heard a clip of his
deep voice, although it was still too low to recognize.
“Were you in the ballroom when I was dancing?”
“Yes.”
“You watched me the whole time?”
“Yes.”
“Why?” I asked.
Oh, my GGod. The initial creak in the floorboards I heard
upstairs before, too. That was him. He was here the whole
time. The idea of his eyes on me. Being in the room, lurking in
a corner and watching me…toying with me.
Why would he just hang out and watch?
“Because it was pretty,” he finally said.
Pretty?
“You asked me why you?” he said, holding me to him, my
back pressed into his chest. “That’s why. You’re pure.”
Pure? What…? Did he want to make me impure now
or…?
“Your parents are bad,” he explained. “Your sister lacks
any depth to be interesting, and I hate my house. It’s so dark
there.” He paused, then continued. “It all fucking disappeared
when you were dancing, though. It made the world prettier. I
liked it.”
“So, what?” I argued. “You wanna lock me in your
basement to dance for you on command? Is that it?”
But instead of the creepy, monotone, and calm response I’d
been getting, his chest shook with a quiet laugh. “Can I hide