Jack looked confused. She seemed flustered. He figured it was him. She was attracted. Nice. "Goodnight." He said as she walked out. He lay down on the couch and looked up. He could smell her around around him. He remember this smell. Heck it kept him human. Someday he would confess to her about what he was. What would she do? Think he was a monster? Worse try and find a way to kill him? No he would wait to tell her. 

He fell asleep almost instantly. It was a gift really.