Read The Hidden Prince Who Loved Me / 引き籠もり王子の献身 / The Devotion of the Reclusive Prince / La Devoción del Príncipe Recluso / La Dévotion du Prince Recluse / 은둔 왕자의 헌신 / 隐居王子的献身 / Pengabdian Pangeran Penyendiri
To protect her homeland, Louise marries Arsenio, the first prince of a neighboring kingdom. But her husband’s constant unfaithfulness shatters their marriage, and she finds herself shunned even by her mother-in-law for failing to produce an heir. Lonely and heartbroken, Louise flees a humiliating scene at a royal ball. Only to encounter a mysterious young man in the Rose Palace. From their very first meeting, he confesses his love for her. Yet this stranger turns out to be none other than the kingdom’s long-missing second prince…!
Eveaustria
The story is a bit boring because of being long-winded and all about relationship troubles despite the unnecessarily overly “evil” (soon to be ex-) husband of the female lead and some stupid drama-scenes in between.
But at least the actual male lead is really nice from the very beginning, and not your typical manhwa male lead (instead that would be the scum husband that the female lead runs from!). Not sure if this would make it worth reading to you, however I’m giving it a chance basically only because of this actually kind ml 😛