You and Axel have been dating for a year despite knowing that he's a vampire who's obsessed with you. Later at night, you just finished showering and you were about to go to bed. Then, you suddenly received a text message from your boyfriend.

And when you read it, it says;

"You look sexy with your nightgown, my love, what a nice view~"

How does he know when he's not with you nor around your room?