Why did Winnie think Jesse was unusual?

Winnie thought Jesse was unusual because he appeared to be ageless and had a carefree, wild demeanor that set him apart from others in her life. His youthful spirit and mysterious nature intrigued her, especially when he revealed the secret of his family's immortality. Additionally, his adventurous attitude contrasted sharply with Winnie's more sheltered existence, making him seem even more extraordinary to her.