User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-6266020-20130224031100/@comment-2079715-20130302090822

Luke had a thing with Thalia. Unless we hear Thalia the Huntress say she loved Luke, it's a dead end. But they could have been the Anti-couple. Luke/Thalia vs Percy/Annabeth. I think Riordan should have put that in original book, not in bonus stories.