There are many idioms that include the word 'heart' and we're celebrating Valentine's Day by showcasing five of them here. We hope you have a Happy Valentine's Day that fills your heart with joy! Please share these with loved ones and others in your life ...

Heart idiom #1: change of heart - note that you can "have" a change of heart or "experience" a change of heart.

Heart idiom #2: (to) take to heart

Heart idiom #3: at the heart of

Heart idiom #4: with all one's heart

Heart idiom #5: in one's heart of hearts