Things Not Seen by Andrew Clement

I distinctly remember reading this in first grade because my teacher did this thing where you had to read to her for her to judge your reading capabilities, and I started to read aloud the part where he talks about his #2s not being invisible and I was embarrassed to read that out loud lol

Yeah this was 100% required reading in my language arts class growing up. He starts a relationship with a blind woman too. And the company that manufactures the electric blanket knows about the issue and pays him off to keep him quiet.