Be Over the Moon

The following idioms express happiness:

to be over the moon: "He was over the moon when she agreed to marry him."

to be thrilled to bits: "They were thrilled to bits when they won the lottery."

to be in seventh heaven: "I was in seventh heaven when I learned that I was accepted into medical school."

to be on cloud nine: "He is on cloud nine because he is in love."

to jump for joy: "We jumped for joy when we won the game."