Read Under the Oak Tree manhwa🧡. Summary Under the Oak Tree manga:

The daughter of a duke, the stuttering Maximilian, married a knight of lowly status at her father’s coercion.
After their first night, her husband departed for an expedition without another word.
He comes back three years later, this time as a famous knight in the whole continent.
How would Maximilian face him on his return?
“The more I think of you, the more lonely and lonely I become. I don’t know why I can’t quit even though it’s so painful.”
Reading Manhwa Under the Oak Tree at Manhwa Website. You can search manga by another name or read novel version on Library Novel:
Debajo del Roble,
상수리나무 아래