BE CRAZY ABOUT SOMEBODY / SOMETHING & GO CRAZY

Examples :

I am crazy about football. I almost watch it every day.
She is so arrogant that she thinks all men are crazy about her.

Meaning:

To be very interested in something or love someone very much.
Used to express an excessive love to someone or something.

2- GO CRAZY:

Examples :

Whenever I listen to him, I go crazy because of his boring speech.
My mother goes crazy when I stay out at night.

Meaning:

Get very angry