Help! How Did Someone Else’s Male Consort Become My Wife?

[Dual male leads, insect world, mildly yandere, two powerful leads, happy ending, 1v1] On the first day after transmigrating into an insect-world novel, Mu Sier saw his ex-boyfriend kneeling on the ground. The man had abandoned him three years ago. Without a word, Mu Sier slept with him. The next day, a rush of memories hit him, and he realized he had become the other man. His ex-boyfriend was now someone else’s female servant. Consumed by jealousy, Mu Sier crawled through the darkness and went to visit his boyfriend’s husband, intending to steal him away. Agries knew that Lord Gu Heihei, aka Mu Sier, was perverse and despicable. After being deeply marked by him, he was so overwhelmed that he even wanted to kill him. But things seemed to be going a little wrong... His male master beat him, and Lord Gu Heihei came to visit... He got hurt, and Lord Gu Heihei came to visit... He went to sleep, and Lord Gu Heihei came to visit too... Mu Erli’s face darkened with fury. He cursed and drove the visitor out. Mu Sier sighed and gave his assessment: “Short-tempered, impatient, and abusive. He should get a divorce.” Then he turned around and asked, “Want to come home with me?” Again and again, something inside seemed to melt. Until one day, he pushed open Lord Gu Heihei’s door once more, eyes red-rimmed. “My lord, you can’t... I’m not divorced yet.” Mu Sier was forced back to the modern world. He heard that the protagonist of the insect world had turned seriously dark. When he finally transmigrated back, the metal chains on his body clinked. “Wait, where’s my cold, aloof military female? Did I transmigrate into a yandere novel?”