My Wife, Dead for Years, Has Returned

I'm an old widower who's been alone for years. But one day, in my spare time, I noticed a disciple below the stage who looked just like my long-dead husband. Outsiders say we were deeply in love, a perfect match, and utterly devoted to each other. Little do they know I was only a tool he used to prove his Dao. Back then, when I was struggling at every turn, he cornered me, pressing a blade against me until I admitted he was my Dao companion. * My husband, gone for years, has come back. Wen Nongxi, who has spent years as a widower, wanting nothing from anyone, is drenched in cold sweat but smiles warmly. “I've missed you for so long.” His Dao companion has been a demon for ages, and now behaves even more brazenly. He strokes Wen Nongxi's face. “Oh, really? Prove it to me.” Wen Nongxi takes half a step back. The world will never know that his Dao companion is the greatest demon lord alive. And now the leader of the immortals is being pressed down by the demon, who murmurs against his ear, “If I could get pregnant, I would have had your child in my belly long ago. So when are you going to give me a proper title?” But things seem to be going well now, because the other man seems to have lost his memory. Wen Nongxi stares at him, falling into another round of doubt. ○ Third-person short story ○ Cool on the outside, domestic and snarky on the inside top X sharp-tongued, yandere bottom who could destroy the world ○ Smiths' marriage trope ○ Married first, love later + long-standing secret crush + misunderstandings + rekindled romance ○ Both top and bottom are a complete mess, with very abnormal thought processes :D Theme: The wise adapt to the times, and the discerning adjust to circumstances.