change of heart
If someone has a change of heart, they change their opinion or the way they feel about something:
She was going to sell her house but had a change of heart at the last minute.

[TahlilGaran] Advanced Learner's Dictionary ▲

change of heart
a decision that what you thought earlier is not true or right now.
He'd been active in the organization for years, but after a change of heart, Yang left the group.

He never wanted a movie made about him, but three months before he died, Chavez suddenly had a change of heart.

[TahlilGaran] English Idioms Dictionary ▲

change of heart
a change in the way one feels about something
The woman had a change of heart and decided to let her child go to the circus.

[TahlilGaran] English Idioms Dictionary ▲

change of heart
n. phr. A change in the way one feels or thinks about a given task, idea or problem to be solved.
Joan had a change of heart and suddenly broke off her engagement to Tim.
Fred got admitted to medical school, but he had a change of heart and decided to go into the Foreign Service instead.

[TahlilGaran] English Idioms Dictionary ▲