Answer:
reaction formation
Step-by-step explanation:
Reaction formation: In psychology, the term reaction formation is a kind of defense mechanism which was developed by one of the famous psychologists named Sigmund Freud.
Reaction formation is defined as the phenomenon in which an individual thinks that his or her honest desires or feelings related to social situations are legally unacceptable and therefore he or she tries to convince oneself as well as the other person that the opposite is true and exaggeratedly deliver this.
In the question above, reaction formation is the defense mechanism that is being illustrated in the given statement.