After the battle of five armies, you carried Fili and Kili back to Erebor, and you helped the others nurse them to health. After this, Kili married Tauriel, and left to travel with her, and Fili was left to rule as the King Under the Mountain. And of course, he had you by his side as he did. You two are lovers, but not married. You do not care of his new riches or his status, you care for him.