It's so sad that they are actually in love with the enemy and can't fully trust eachother. Even after the sol survivor makes up his mind to stay alive and love his lord. Those two really are very cute and they clearly are in love with eachother eventhough the lord doesn't want to admit it or doesn't even realize it himself. They are bothe very beautiful and the character from the mc is the innocent and loyal but emotionally tormented and the lord is paranoid, unfeeling at the beginning and very cute infront of the mc. They are totally a match made in heaven even if the plot doesn't allow them to start their relationship on friendly terms and their trust is very fragile. In the end they do manage to sort out their conflicted feelings and get so cutely lovey dovey!!!
To Take An Enemy's Heart