Unintentional Substitute: the Demon Lord Loves Him so Much

When Mo Yuan dug out my heart, he said, "You are just a substitute." As a stand-in for three years, I learned to laugh from Lingyao, walk from Lingyao, and play the piano from Lingyao. I threw the mirror because I didn't want to see my face that wasn't hers. He said that loving me was a lie and marrying me was a lie. The only truth is the dagger that pierced my chest. I fell into the abyss of ten thousand demons, bitten by ten thousand demons, without crying a word. Demon Lord Jin squatted down and held my chin: "Be my woman, and I will keep you alive. Three hundred years later, you will be mine." I agreed. It wasn't because of my heartbeat - after digging out my heart, I lost my emotional energy. There will be no heartbeat, no heartache, and there will always be an empty hole in my chest. I laughed, made noises, killed decisively, and reached the top of the Three Realms. But when Jin kissed me, his heartbeat was normal; when he said he loved me, there was no reply in his heart. I thought this would be it for the rest of my life. Until Mo Yuan knelt under the old crabapple tree and used the Dragon God's dying tears to rebuild my heart. Until Jhin said: "If your heart doesn't beat, I'll beat it for you. One lifetime is not enough, and eternity is not enough." A crazy criticizing demon has spent thousands of years waiting to pamper me to the core. A man who atoned for his ex, guarded me for the rest of his life and paid back my blood debt. And I, an emotionless substitute, who should I choose? No, whoever I choose is God's choice.