"So Annabeth, I have a proposition for you." "What is it?" "Well, I'm kind of lacking a best friend at the current moment, so I was wondering if you'd like to fill in the role." "Did someone set you up to this?" "No, Annabeth. Of course not. This offer comes from the genuine place that is my heart." OR Annabeth's a lonely girl & a certain boy might be able to fix that. AU. Oneshot.