"Every day, I pray. That this love will die. That I may love you only until today, And tomorrow, this love will be no more." Born of an illicit affair, the ill-fated Imperial Princess Talia Roem Gwirta grows up warped in a world that denies her. With indifferent parents, hostile half-siblings, and servants who treat her with contempt, she survives by baring her thorns to anyone who dares approach. Yet before one man, even Talia's defences crumble- That man is Varkas Laedgo Siorcan, the noble heir of the East. As the vassal of the Imperial House and successor to a grand ducal line, he was forced into perfection from birth. Raised under training that bordered on ab*se, his emotions were dulled, leaving him a man who exists solely for family honour and duty. To fulfil a promise made to the late Empress, he becomes betrothed to Talia's elder half-sister, Aila. Shattered by despair, Talia slowly falls apart. But then- Her love, destined only for death, begins to face an unexpected turning point...

Orphaned at a young age, Layla Llewellyn feels like the luckiest girl in the world after she moves in with her uncle Bill, a gardener who lives on the scenic Arvis estate in the Berg Empire. To Layla, Arvis seems like paradise; she loves to explore the vast forest, always bringing her notebook to record the wildlife she encounters. She especially loves the birds, watching them with awe as they hatch and grow from fluffy chicks into beautiful birds. Duke Herhardt, the young, handsome lord of Arvis, is also interested in birds-and in Layla. But the difference, is he's interested in birds because he likes to hunt them... and he's interested in Layla because he likes to make her cry. If a lovely bird is trapped in a golden cage, which will she choose: a life of luxury, or freedom?

Based on your search, this phrase likely refers to the novel/story "I Only Need The Duke's Child" (also listed as "After Regressing, My Second Marriage to My Ex-Husband was Solely for Pregnancy"). Here is the description of that story: Plot: The main character, Blair, dies a tragic death, regresses in time, and marries her ex-husband, the Duke, specifically to have a child. Conflict: She plans to leave immediately after becoming pregnant, seeking only to have the child rather than rekindle their relationship. However, the Duke becomes unexpectedly cold and obsessed, insisting she stay. Characters: The Duke is described as someone who treats her differently in this second life, while she tries to keep a "contract" mentality to protect her heart and secure the child she desires.