She had fallen in love with him.
"Love" meaning: Anxiety when he wouldn't text back.
Insecurities when he looked at other girls.
Wondering if he felt the same way about her.
Not eating until he would remind her to.
Sleeping in bed all day.
Bouncing her leg in class.
Not doing her homework.
Crying.
She didn't fall in Love with him.
No.
She fell into depression instead.