Yes, Charlotte liked Nero.
But Nero still hasn't got over his waifu getting killed in front of him when he was younger and feels Kurono resembles her killer. (And also a bit his waifu, since the killer literally made her as a vessel for his reincarnation). That trauma leads him to betraying the allied country (and the rest of the continent) where Charlotte was a princes. As a result her brother gets killed, her dad MIA and the country captured by the enemy. So now she, all his friends and even his own family hates Nero.
Charlotte actually started out hating Kurono but now she feels much better about him, though not romantically yet. Still to early to tell, though Kurono is deadly afraid of expanding his harem more than what he currently has.