Even though the mansion has over thirty rooms, One Sword insists everyone shares a room with their partners. His reason for this was that teamwork goes beyond the battlefield, it comes from a deep understanding and bond between both sides which can only be built through genuine friendship.
The moment Lucius heard this, he realized he would never be a good teammate to Lia. He had no plans of bonding with her, as he knew a woman's loyalty is fickle.
[Women bond faster but shorter. Men take time to bond but when they do, it's for life] Lyxor said to Lucius and he agreed with those words.
We watched Dean and Maya act ecstatic while knowing she didn't really care for him. In his opinion, Dean would only end up becoming a victim and getting abandoned if she meets a better match.