This is my favorite ship so all you haters, shOo! It was so sweet of him to leave his adoptive mother, Cow, just to journey with MothFlight. Someone who he had just met I might add. He knew nothing about her, and still he traveled with her to live in SkyClan to be a medicine cat. Which he also knew nothing about but he trusted her. They always made up excuses to be together and loved each other so much. It was so sad that he died over some sap but whatever. I wish he'd lived to raise whichever kit went to SkyClan.
*I've made an updated opinion on this after rereading the book*