In Percy Jackson and the lightning thief what is Grover and Annabeth's past relationship?

In "Percy Jackson and the Olympians: The Lightning Thief," Grover and Annabeth have a friendship that is rooted in their shared experiences as demigods at Camp Half-Blood. Grover, a satyr, serves as Percy's protector and is loyal to his friends, while Annabeth is a daughter of Athena who is eager to prove herself. Their relationship is marked by mutual respect and camaraderie, with Annabeth often taking on a leadership role and Grover offering support and comic relief. They work together to help Percy on his quest to retrieve Zeus's stolen lightning bolt.