Unworthy by Susie Tate

Unreliable, irresponsible, unpredictable, unaccountable—Yaz knows how her family view her. She was never like them though, never academic enough, never serious enough, never really good enough.
But he was different.
Heath was the one who stuck up for Yaz when she was a child. As her brother’s best friend and ten years older, he had been her hero—always defending her to her family, always seeing the best in her—he made her feel worthy of approval.
But as her childhood adoration morphed into full-blown teenage love for her idol, and Heath grew from the good-looking boy she knew to the devastatingly handsome emergency department doctor he is today, his attitude seemed to change. For some reason, her quirks went from charming to annoying—her alternative world view from refreshing to ridiculous. In fact, there are a lot of things about her Heath seems to now find ridiculous:
“You look ridiculous, Midge.”
“All this alternative therapy crap is a ridiculous waste of time.”
“Your obsession with windsurfing is getting ridiculous.”
“That ridiculous bike of yours is a bloody health hazard. When are you going to grow up and get a car?”
Having gone from worthy to unworthy in Heath’s eyes, Yaz convinces herself that his cruelty has killed her childhood crush. After one humiliation too many, she finally cuts ties altogether. By the time Heath starts to see all that he could lose, it might be too late. Maybe it’s not Yaz who’s the unworthy one after all?