A second wife

 "That is no excuse for the embarrassment he has caused my sister. There is no way an enslaved priestess can compare to Sapphire." Ryker spat supporting his sister. Lucian wanted to avoid the responsibilities of the marriage and used Callista as an excuse. 

 He was fully aware of the food shortage and knew that Galvia was interested in gaining Darconia's support because of its military strength. So, they seized the opportunity to try to take advantage of the situation by marrying their princess as the future crown princess. 

 "I can't believe we were made to eat in the presence of dirt.." Ryker spat. Callista could not hold back her tears even if she wanted to after her heart was torn to pieces by Ryker's words. 

 The windows burst up with a strong wind blowing inside that pushed Ryker off his seat. "You have a right to talk to her that way." Lucian barked at Ryker on his feet, his eyes blazing gold.