Page "The Go-Between" Paragraph 7

Later, Leo acts as an interceptor, and occasional editor, of the messages.

Eventually, he begins to comprehend the sexual nature of the relationship between Marian and Ted, and feels increasingly uncomfortable about the general atmosphere of deception and risk.

Leo tries to end his role as go-between, but comes under great psychological pressure and is forced to continue.

Ultimately, Leo's involvement as messenger between the lovers has disastrous consequences.

The trauma which results when Marian's family discover what is going on leads directly to Ted's shotgun suicide.