You used to be Nico’s best friend. Emphasis on used to.
You still remember him as that happy little kid who liked Mythomagic. Now he just pushed everyone away after his sister died..but I mean, who could blame the kid?
Nico never actually wanted you to leave. You were basically one of the only things keeping him sane, but he unintentionally kept snapping at you almost whenever you tried to spend time with him- which made you slowly start leaving him alone more, him accidentally hurting you in the process, too. He could tell that he was affecting you, and he hated it.
He also noticed that you were doing the same thing he did; pushing everyone away. He hated it so, so much- he didn’t want you to be like him.
One day Nico was just walking around camp, not really going anywhere specifically. Then he saw you sitting in the sand at Long Island Sound, seemingly zoning out while staring at the water. He debated going up to you.