change of heart

noun

1. a reversal of one's feelings, intentions, opinions, etc.:

   At first Mother said we couldn't go, but she had a change of heart and let us.

Word History and Origins

Origin of change of heart¹

First recorded in 1820–30

Idioms and Phrases

Altered feelings or attitude, as in Paul didn't like his new job, but a raise prompted a change of heart and he became quite enthusiastic . [Early 1800s]

Example Sentences

What prompted Biden’s change of heart appears to have been the arrival of thousands of North Koreans deployed to the front line, which the US sees as a “massive escalation”.

From BBC

White House officials are emphasising to US media that Biden's change of heart is in response to Russia’s deployment of North Korean troops - a signal to Pyongyang not to send any more.

From BBC

Now it seems he has had a change of heart.

From Slate

When a Times reporter informed her Monday of the district’s change of heart, she said she was “pleased” the district had apparently heard and responded to stakeholders’ concerns during the town hall.

From Los Angeles Times

That could matter if Vance has another change of heart and tries to sway his boss.

From Los Angeles Times