Real heartbreak is unmistakable, from the intensity of the emotional pain it causes, to the totality with which it takes over our mind and even our body.
What does " to the totality with which it takes over our mind and even our body" mean?
It takes over totally, 100%, not leaving any part untouched.
romantic heartbreak and the heartbreak that ensues from the loss of a cherished pet. I have done so because this experiences involve a complication that is particularly difficult for the Brokenhearted.
What does "involve a complication that is particularly difficult for the Brokenhearted" mean?
A guess: That you actually suffer a real loss, of someone or something from your life. That is things must change. You can imaging heartbreaks that dont involve any physical manifestations, such as a simple loss of a dream. Here the two chosen require things in your life to change. Regular routine is disrupted, also, usually there are many reminders, the empty pet food bowl.
Just a guess.
Does the book not talk about this complication, next?