One of the leads is on both. Cheating Husband. Same Suspense feeling...Missing mother.. Strong Antagonist.. Some of the actors were on both .. Some of the same locations

15 yr old marries general turned prince against her wishes and learns to love him. Love like the galaxy is more about the family dynamics and the choices we are forced to make. While The Rebel Princess is more about the political issues and power struggles in the palace. LLTG also has some political aspects specially in this part.

Different Storyline but I have the same feelings with both these shows. Unconditional Love and trust from the female lead towards ML. Learning to love and adapt to one another after marriage.