@Emo-Dork you're right that it can't, but not for the reason you think. It's been stated several times in the books that when it comes to demigod relationships, only the godly parent matters. if 2 demigods have different godly parents, then it's ok for them to date. The reason Perlia can't happen is because Thalia is a hunter of artemis, and has sworn off males for life