Once in a Blue Moon by Kate Colton

People-pleaser Blanca Perez is crazy for Alden Clegg. She moons over his yearbook pictures from 2013 when they were seven and can't help but swoon silently when she sees him in the hallway. Only, Blanca isn't too crazy for Alden. She has a massive crush on him, but she's too scared to actually do anything about it, which is fine with her. Until things get real. After school one day, she finds a note in her sketchbook from Alden, asking her out. Things rush by and in what feels like a day, Blanca and Alden are officially exclusive. But by the time Blanca realizes Alden isn't all he seems, she feels like she in too deep in their relationship and can't climb out of the pit she dug.