Summary: Sometimes in life, you have to sacrifice your relationship for the better good. It might be that your family is not agreeing with you both being together or the circumstances arise where you have to move a distance far from lover and it is more easier to give up relationship so that your lover can live a better life.
You are the greatest thing that happened in my life. However, now that I have to move to support the weak financial condition of my family, it will be best for both of us to separate our ways. I would be highly obliged if you can support this decision of me because my family is in need now. I know that these words will give more pain to both of us but they are important to discuss now.
I consider myself as a culprit in causing you so much pain and believe me; I will never be able to forgive myself. However, sweetheart, you are a great person and you will find someone better than me. I wish you a very good life ahead and I will pray everyday that you get a very loving person to take care of you forever.
God Bless You.