He had to stay behind. Some one had to stay but why did it have to be him. I am Annabeth Chase, daughter of Athena, goddess of wisdom. My boyfriend Percy Jackson, son of Posiedon, volunteered himself to stay in Tartarus to close the doors of death. It was supposed to be me. Why he let me be the one or at least let me stay with him. I tried everything to get him out with no luck. Someone has the to stay, why him.