Final answer:
Hero believes that Benedick should not tell Beatrice his love for her because she is concerned it may end badly and break his heart.
Step-by-step explanation:
In the play Much Ado About Nothing by William Shakespeare, Hero thinks Benedick should not tell Beatrice his love for her because she believes it may not end well. In the passage, Hero expresses her concern that if Benedick confesses his love to Beatrice and is rejected, it will break his heart. She values their friendship and does not want to see him get hurt. Hero believes it is better for Benedick to keep his love a secret in order to protect their friendship.