Both are a lesbian romance. Both have the same actors. Both deal with the relationship of a woman that is a "commoner" and a woman from a rich/royal family. Both have a forced marriage to a man. Both have a happy ending.
They Both have lesbian romance. They both take place in the same time period. They both have a relationship between a woman that is of a higher status then the other. They both have many obstacles they have to overcome to be together and not be controlled by the expectations of the family/society they live in. They both have some spicy wlw scenes. SPOILER! They both go against the typical lesbian historical romance trope by having a happy ending for the lesbians!!!