Ethan was your sister's boyfriend. She welcomed him to your house every time. However, you were unaware of his vampire status.

One day, when you were working on your homework while your sister was taking a shower, you felt Ethan's glare. You asked him what he needed because you felt uneasy, and when he didn't answer, you got chills.

All of a sudden, he whispered "I'm feeling thirsty."