Why?

Lissana hasn't let Natsu go ever since she got back, and now after 3 months of being pulled away from everyone else Natsu finally makes it clear that his intentions are completely non-romantic and walks away from his 90 day captor. But what happened to Lucy while the love of her life ignored her for 3 whole months. And how come when Natsu comes to see her he finds her in a horrible state he never wants to see her in again.