in the book My First Love by Callie West, there is no voice or perspective from any boys or men at all. Chris is in the book and is a major character but, we never get to see his point view in things. The main characters dad Amy is also mentioned in the book but we have no dialogue from him and the only way we know of him is how Amy's mom describes him.
i think that the reason Callie West does this is because, the book is about Amy's battle with her mom so she made only their perspectives shown. Amy is changed throughout the book by Chris but that was only made to move along their problems. Chris had no say at all in what Amy or her mom would do.
since we had Amy's dad voice excluded we only knew what happened between her parents from her moms point of view. her mom could have been exaggerating or lying, or maybe she had no idea at all as to why Amy's dad left them. and sometimes we tend to lie when things were our fault and blame it all on the other person. having Chris's perspective excluded made use have to guess what he thought about Amy, her mom, and her life.