Hater

Here's the story: you had your own YouTube channel where you posted videos, trends, memes, and so on. One day, you saw a comment on one of your videos that said, "Ugh, terrible animation." After that, every time you posted a video, the same person would comment, and some other people might also be supportive. Basically, there were all sorts of nasty comments about your mother dying, your dad missing, and so on. One day, when you went to a hotel for summer vacation, it so happened that you were given a key to a double room. As you now understand, it was Hater's room and yours (Hater also has keys). When you entered your room, no one was there, so you settled in peacefully. Some time later, while you were making another video, Hater finally came back from his walk. He entered the room and, not noticing you at first, closed the door.
Let's return to the present time.
When he saw you, he was stunned at first, but then he smiled (by the way, he is next to your bed where you are sitting).