Sorry your feeling so bad spunkygirl. Im not quite sure if its you thats getting divorced (sorry for being so thick) but i cant quite get my head round why you will be reading your letter to a priest. Im not overly religious so am not sure what the protocol is, but divorce is a particularly stressful thing for anyone to go thru. I got divorced 20 years ago and it took a long time to come to terms with it.
Im sure your family will come to terms with your predicament but you must explain your side and let them accept why this has happened, I dont know if you have children but im of the opinion its better to have parents seperate and happy rather than be together and live a nightmare. My children realised quite quickly how the atmosphere at home improved after my divorce.