In her previous life, they fell in love after marrying, but neither of them ever confessed their feelings.
After Gu Jiuze returned to his position as the Lord God, he "accidentally" discovered that his wife had once cried in her sleep as she said how much she missed him...
Only after Su Miaolan died did she learn that she was a cannon-fodder supporting character in a book.
Her husband, Gu Jiuze, was one of the villains opposing the male lead, the Crown Prince.
In her previous life, after the Marquis's family adopted Su Miaolan, the only person who ever showed her warmth was Gu Mingze. But even by the time Gu Jiuze died in battle, she still hadn't managed to confess her feelings to him.
After being reborn, Su Miaolan promptly packed her belongings and headed straight for the country estate, where she found her future villainous husband, still a pitiful little thing.
This time, she decided to be brave.
She treated his wounds, brought him food, and gave him armor. And, while she was at it, she told him all the sweet things she'd left unsaid in her previous life.
Just as she was focusing on her conquest of her husband, the female lead, Su Zhen'er, who wasn't supposed to return until a year later, came back to the estate early.