Change of heart
(PW) a change in the way one feels about something
I wasn’t planning to spend the holidays with my family, but after speaking with my mother, I had a change of heart.
(free) n. pl. changes of heart
A reversal of one's opinion, attitude, or feelings.
(dictionary) noun
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.
Origin:
1820–30
(your) change of heart
a change of mind, affections, loyalties, etc.