Both can be true
(Book)

"Ash is no stranger to feeling like an outcast. For someone who cycles through genders, it's a daily struggle to feel in control of how people perceive you. Some days Ash is undoubtedly girl, but other times, 100 percent guy. Daniel lacks control too--ofhis emotions. He's been told he's overly sensitive more times than he can count. He can't help the way he is, and he sure wishes someone would accept him for it. So when Daniel's big heart leads him to rescue a dog that's about to be euthanized, he's relieved to find Ash willing to help. The two bond over their four-legged secret. When they start catching feelings for each other, however, things go from cute to complicated. Daniel thinks Ash is all girl . . . what happens when he finds out there's more toAsh's story?"--,Provided by publisher.