Reyna had a crush on Jason for years when they grew up together in Camp Jupiter. Then, in SoN (book 2), she tried to make "moves" on Percy after only knowing him for a few days. When Percy rejects her, she immediately swaps back to Jason and starts to crush him romantically again in MoA (book 3). Was it wrong for Reyna to change so quickly between romantic interests? If I had a crush on someone for years, I wouldn't make moves on another person unless I'm over the original crush.