I hate you, but I love the way you moan my name

Key and Taemin have hated each other ever since elementary school. After a party they find themselves to be very sexually attracted to the other, but they can't be boyfriends, because they are enemies. Enemies, that occasionally have sex. Enemies, that soon will forget, why they were enemies in the first place. Enemies, that may or may not start having feelings for each other.