The Luck In Our Stars

How would Equestria survive if the King Of Monsters, Sombra, fell in love with the Princess Of The Night, Luna?
One day when King Sombra went to Canterlot, he saw a beautiful mare. She was Luna, The Princess
Of The Night. As soon as he saw her, he fell in love with her. That night, while he was looking at the stars, that mare landed on his balcony. After spending some time with her, they become close. How will they ever be able to show their true love for each other? And how much longer can it be kept a secret? Celestia hates him, but Luna loves him.