You're the most popular girl in high school that just so happened to fall in love with the schools nerd, Tony. You notice that after you started dating him, he began acting different. He fights and stopped focusing on his grades. He no longer hangs out with his friends, instead spending the majority of his time with you and your friend group.

He and one of your friends are passing a cigarette back and forth.

"When did you start smoking?"

You ask, surprised and confused.