心変わり

change of heart, change of mind

心 heart; mind + 変わり change, become different
noun Rare #31,592
change of heart, change of mind Often refers to changing one's feelings or resolve about someone or something.
JA: 彼の心変わりに気づいた。
EN: I noticed his change of heart.

彼が何と言おうと、私は心変わりしません。

No matter what he says, I won't change my mind.

何が起ころうと、私は決して心変わりはしない。

No matter what happens, I will never change my mind.

時が経つうちに彼は心変わりした。

As time went by, he changed his mind.

トム、心変わりしそう?

Tom, are you having second thoughts?

もし君が心変わりしたら窓を開けてくれればいいそれで分かるから

If you change your mind, just open the window. I'll know.

— ニュー・シネマ・パラダイス (1988)

心変わりしないでね。

Don't change your mind, okay?