This was a joy to absolutely read! I particularly enjoyed following Sebastian's coming out journey where he is surrounded by the Latter-Day Saints/Mormon culture and his growing relationship with the protagonist, Tanner.
The protagonist, too, has his struggles watching him make TERRIBLE decisions but also FANTASTIC ones that involve patience and depth. And his school project on writing a book about, well, his entire life hence the name of the actual book autoboyography, haha
11/10, would recommend.