At the Edge of the Universe by Shaun David Hutchinson
Ozzie’s boyfriend Tommy has disappeared. No one remembers him but Ozzie, not even his friends and family. Ozzie’s parents are sending him to a series of psychiatrists to cope with this delusion, but Ozzie knows that Tommy used to exist. He also knows that the universe is shrinking and that must have something to do with Tommy’s disappearance.
This is a book about how terrible it feels to lose someone and how isolating that feeling can be. Ozzie’s loneliness manifested as the universe literally getting smaller is a wonderful metaphor for what he is going through and ends up being pretty frightening by the end of the book. What happens when you reach the end of the known world? Read At the Edge of the Universe to find out!