心こころ移うつり

noun

change of heart; fickleness

Refers to one's feelings or affections shifting to another person or thing; often implies inconstancy in love or interest.

• 彼かれの心こころ移うつりが激はげしくて、付つき合あうのが大たい変へんだ。

  His fickleness is so extreme that it's hard to be in a relationship with him.

• 彼かの女じょの心こころ移うつりを疑うたがって、不ふ安あんになった。

  I became anxious, suspecting that her heart had turned to someone else.