learn something by heart
have a change of heart
have one’s heart set on
break one’s heart
have a heart-to-heart talk
follow one’s heart
wear one’s heart on one’s sleeve
lose heart
take something to heart
get to the heart of the matter
to change one’s mind
to hurt or make someone feel very sad
to discuss the main issue
to want something very much
to be deeply affected or hurt by something
to become discouraged
to let others see your emotions
to do what one feels is right
to discuss something openly and honestly
to memorize