i don't love you back. [ ( 对不起! ) 我无法回应你的爱。] [ ( duì bù qǐ ! )wǒ wú fǎ huí yìnɡ nǐ de ài 。] i cant love you. [ ( 抱歉！) 我并不爱你。] [ ( bào qiàn ！) wǒ bìnɡ bú ài nǐ 。] Refusing love of others directly may hurt the feeling or heartt of others, so please add " Sorry! " ( in Chinese, 对不起 or 抱歉 ) to ease the possible hurt.

我不再爱你（i dont love you back） 我不能爱你（i cant love you）