Break someone's heart
Angela broke Brad's heart last year. He can't get over her.
I think losing the job broke his heart.
Cross your heart and hope to die
I cross my heart and hope to die. She's coming tomorrow!
Do you cross your heart and hope to die? I won't believe you otherwise.
Eat your heart out
I'm going to New York next week. Eat your heart out!
When he hears about your promotion he'll eat his heart out.
Follow your heart
I think you should follow your heart and move to Chicago.
She said she had to follow her heart and marry Peter, even if her parents didn't approve.
From the bottom of my heart
You're the best player on the basketball team. I mean that from the bottom of my heart.
I think you are a wonderful person. Really, I mean that from the bottom of my heart.
Get at the heart of the matter
I'd like to get at the heart of the matter by discussing our marketing proposals.
She didn't waste any time and got right to the heart of the matter.
Be halfhearted about something
I wish you weren't so halfhearted about this new project! Get serious!
She was rather halfhearted in her attempts to find a job.
Have a change of heart
Fred had a change of heart and invited the young boy into his home.
I wish you would have a change of heart about Tim. He really deserves some help.
Have a heart of gold
Peter has a heart of gold if you give him the chance to prove himself.
You can trust her. She has a heart of gold.
Have a heart of stone
如果说上面一条“a heart of gold”是金子一般的心，那“ a heart of stone”就是它的反面——铁石心肠了。
She'll never understand your position. She has a heart of stone.
Don't expect any pity from me. I have a heart of stone.
Have a heart-to-heart talk
I think it's time we had a heart-to-heart talk about your grades.
She called her friend Betty to have a heart-to-heart talk with her about her problems.
Have your heart in the right place / One's heart in the right place
Come on, you know John has his heart in the right place. He just made a mistake.
Have one's heart set on something / set against something
She has her heart set on winning the medal.
Frank has his heart set against his promotion. There's nothing I can do to help him.