Me: Mmmm? I was just thinking...could you maybe use a collaborator?
I'm experienced.

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nancyk: Experienced?
As a writer/collaborator or Lover/Beloved? Just clarifying.

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Experienced in matters of love, nancyk. Everyone is experienced in matters of words. By age 45, the age most people reach their maturity, the average person has said, heard, thought, and read more than 5,000,000,000 words, so all English speaking people are experienced users of words and everyone is an expert. As for me, I was precocious and reached maturity and the early age of 35 so until now I have thought, spoken, heard and read over 10,000,000,000 words and will happily share a few of them here...

Yes, CathCoy, amen all that Dgeigh said, but one thing more.
The word that describes the state of emotion that you hope to utilize is paramount to the sucesss of your book. Most all self help books that I've avoided have centered their original concept around such a focal word. Take the time to look to other languages for existing terms that approximate the emotional state. Maybe the word that conveys the condition that you address doesn't exist in any language but if the meaning of a foreign word comes close you can imbue it with a fuller meaning of your desire. At last resort try German, hardly romantic, but you'll get a paragraph in a word.

Me? I would cheat and lift the name of a famous (or obscure) classical hero or heroine as a personification of the condition that you wish to describe. In this case only the intense love between the love and the beloved and the separation that they are forced to endure need be considered in your representation, and so you can then choose simply for sound and the aptness of sense.

For example you could refer to a male caught in this unbearable situation as a "Lindoro", and a female as a "Rosina", as in Rossini's The Barber of Seville.

Good luck.