In Love With My Brother's Best Friend

Jacey Hemmings, the sister of the famous Luke Hemmings, seems to have feelings for the other half of the bromance entitled Cake.
Cake? Calum Hood+Luke Hemmings
Calum Hood is Luke's best friend, and Jacey hates to admit that she likes him.
What makes it worse? She's stuck with three teasing boys and Calum Hood for quite some time.

This book is humorous because 5SOS themselves are pretty much fun loving dorks therefore it blends in, you know?