to be crazy about ~ (to love/to like very much)

*This is a casual expression. (to be mad about ~ is also used.)

Eg 1:

A: Look! This restaurant has strawberries and cream! I’m crazy about strawberries and cream!

B: So am I! Let’s order some!

Eg 2:

A: How is Peter? I haven’t seen him for a while.

B: He’s fine, but he is crazy about a girl in his class. When we meet, he talks about her all the time!

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What are you crazy about?