Examples:

• You've got to be over the moon with a fellow like yours.
• Well, I'm sure he's over the moon.
• Rick was over the moon about passing the exam.
• You weren't exactly over the moon when you heard they were gonna live together.
• She is gonna be over the moon that you have a date with a boy.
• He's over the moon that you're here.
• Five days ago, he was over the moon.
• At first, they were over the moon.
• Sure, she's over the moon.
• We were over the moon to get through that one.