Here's how I see it (bxb)

Lynn suffers from Tourette's Syndrome. It's a type of disease that makes a nervous system have like a disorder involving repetitive movements or unwanted sounds. He's been trying to fit in since he started school. His life has been an endless roller coaster ride of emotions.
Of wanting to be apart of groups in school, wanting to be wanted, wanting people to accept him.
In the eyes of many, people think that his best friend, Albie, is using him.
What the normal eye doesn't see is the love they share for each other.