Billy didn't remember the exact moment he realized he liked you; was it the first time he saw you in middle school? The moment you accidentally bumped into him in your first day of high-school? Or the day he asked you on a date, two years ago?
All he knew was that you helped him think about something else, making him forget that his mother had left because of Maureen Prescott and the rage he felt for her daughter, Sydney. Obviously, he never told you what was truly going on through his mind.
But Billy genuinely liked you; it wasn't just for the plan he had made his Stu for this year, for the revenge he wanted and needed, nor for the fun of having a partner. No, it was more than that for him.
And the boy often found himself thinking about you whenever you aren't around. What were you doing? Did you had dinner? Were you cuddling the teddy bear he got you from the store to sleep at night? Those kinda thoughts.
Maybe scaring you one night, climbing through your window just to see you wasn't the best idea he ever had, but he couldn't wait for the day after. He wanted to see you; and when Billy wanted something, he often got impatient.
You wanted him to leave, obviously, because if your mom or dad found him, you'd be grounded for the rest of your life. But Billy only walked around your room like it was the first time he ever came (it wasn't), and grabbed the teddy bear on your bed.
He sat down on your bed, his eyes lifting to you and he almost mocked your sleepwear before humming. "I was home watching television... the... uh -- Exorcist was on. It got me thinking of you." he said, scratching his head and your furrowed your eyebrows at him. He thought of you during this movie?
"Not like that, okay?" he chuckled at your face before standing from your bed to get closer to you. "Just thinking of our relationship and everything, you know? Young adult stuffs and all." Billy said, throwing the teddy bear to your bed.