The heart-breakingness of the situation was overwhelming.

She sang heart-breakingly beautiful songs at the concert.

She ran heart-poundingly fast to catch the bus.

She sang heart-rendingly, bringing tears to everyone's eyes.

The roller coaster ride was heart-stopping.

The roller coaster ride was heart-stoppingly thrilling.

He received two Purple Hearts for his bravery in combat.

The deck of cards contains four aces of hearts.

Watching the sunset with my loved ones is a real heart-warmer.

She had many changes of heart throughout her life.