Useful expressions using "heart" part 2

1. Cross your heart

If you verbally cross your heart, you do it to maintain the truth of what you just said. You can take this one step further by adding “and hope to die” on to the end of your first utterance, as in “I didn’t eat the last cookie--cross my heart and hope to die.”

2. Wear your heart on your sleeve

In Shakespeare’s Othello, Iago states: “I will wear my heart upon my sleeve / for daws to peck at.” It means to showone's feelings clearly and openly by one's behavior.

3. Break someone's heart

If you break someone’s heart, you cause them great disappointment or sorrow. This often occurs in the realm of love, 

4. To have the heart

Do you have the necessary will to do something? Yes? Great! Then you have the heart to do it. It's an expression meaning “to become encouraged.”