How did tam lin protect celia from becoming an eejit?

In "Tam Lin," Tam Lin protects Celia from becoming an eejit by using his knowledge of the faerie realm and the transformative power of love. When the faerie queen attempts to claim Celia as one of her own, Tam Lin bravely confronts her, revealing his own past as a mortal who was ensnared by her. He instructs Celia to hold onto him tightly and not let go, which allows her to resist the queen's magic. Ultimately, his love and sacrifice shield her from succumbing to the fate of becoming an eejit.