As far as I know and studied mitology, Apolo did not kill Orion for jellacy. And Artemis neitherturned into a virgin goddess because of his death. Artemis already was a virgin goddess when she fell in love with Orion, and Apollo killed him to prevent that she broke her vow. Wikipedia, I choose you.
I don’t really think that Reyna has really hitted on Percy, she just needed somebody who was good for lead to help her to lead Camp Jupiter, and she thought that Percy could be that person. What’s more, Reyna said that the leaders normally are romantically envolved, not always.
When Percy gave up the mortality for Annabeth, I just could remember that Muse’s song, “Neutron Star Collision (Love is Forever)” because there has a part that they sing “and if we die, we’ll die together”.
I’ve have seen people saying “Hera is selfish, insult Annabeth and Thalia, and has stoled Percy and Jason’s memory”… Guys, come on. She’s the only olimpian who’s trying salve the world from Gaea and the demigods still treat her like that because of Percabeth and Thaluke? If you were gods and has so many sovereignty, you would prefer YOUR world or a couple?