Fit as a Fiddle

To be in very good physical condition

Steal Someone's Heart

To cause someone to fall in love with you

Go Bananas

To become very excited, angry, or crazy

Long Story Short

Used to indicate that you are giving a brief summary

Cry over Spilt Milk

To be upset about something that has already happened and cannot be changed

Storm in a Teacup

A lot of commotion or fuss about a trivial matter