User blog comment:SayuriDarling/The Mark of Athena Official Discussion/@comment-4283185-20121008112157/@comment-2229042-20121008115712

It's in there for sure. You probably read too fast or haven't gotten to it O.o Anyway, I think it's in one of Annabeth's chapters, where she says that losing their [Percy and Annabeth's] gray streak over the summer made her feel like she was losing a spiritual connection with him or something. It was kinda cute, kinda sad :(