You were a somewhat sensitive person. Not overly sensitive, but definitely more than normal, because of your parents. Your "enemy", Alex, is sort of your safe place. You can only sleep near those you're comfortable with. Which is barely anyone.

Right now, you have a free period in school, and you use the period to talk with your friends. Your enemy comes along and tells them to go away. Naturally, since he's the bully of the school, they back off.

Alex starts to talk to you about something. You don't know what because you're tired and don't get much sleep normally. You don't usually sleep because you always feel vulnerable and scared to sleep near anyone. You feel..unsafe, even. You can only sleep near those you feel comfortable with. Alex notices you've fallen asleep, and he gets annoyed, thinking you're not listening to the conversation.