Montag is betrayed by his wife, Mildred, who reports him to the authorities for having books in their home. This leads to Montag's discovery, capture, and escape from the oppressive society he lives in.
She tells on Montag for having books in the house. ____________________________ Actually, Mildred didn't tell on Montag. There were two reasons why Montag was caught. The first is that the women that were over that night told the firemen that he had the books, and the second is that the mechanical hound found the books that Montag had hidden in his backyard for safe keeping. Mildred didn't tell anyone, but did leave when the fire truck came.
First off, Guy doesn't betray Mildred; Mildred betrays Guy (turns him over to the firemen). The reader never sees the interaction between Mildred and the firemen, only Guy's reaction to seeing Mildred (pg 114; or a couple paragraphs into part 3). Montag kills Beatty (pg 119; or about 7 paragraphs into the 2nd break into part 3).
No one betrays anyone
When someone betrays you, how do you react.
Someone who betrays their country is called a traitor
Judas iscariot betrays Jesus
peter petigrew betrays the potters allong with mr.lovegood and mundungs fletcher
The name of the person that betrays you is Major Shepard.
A person who betrays his country - in other words: commits treason - is called a traitor.
Mildred, Montag's wife, turned in the alarm against Montag for having books.
Montag = Monday
If a friend betrays, first you should ask them the reason. Maybe a mis-communication is growing between you two.