Equal parts hilarious and heartbreaking, this unrequited-love story will appeal to fans of Jennifer Niven, John Green, and Jesse Andrews.   Seriously, how can you see a person nearly every day of your life and never think a thing of it, then all of a sudden, one day, it’s different? You see that goofy grin a thousand times and just laugh. But goofy grin #1,001 nearly stops your heart?   Right. That sounds like a bad movie already.   Matt Wainwright is constantly sabotaged by