[Your Name, & Address here]
[Recipient Name & address here]
We have been good friends for all these long years, and I have never made any complaint to you. However, now there is something that I want to talk about.
I want to remind you of one incident that I really didn’t like. It was when you – [State here friend’s deed]-. Do you know that I have been feeling like being used by you since then? I must say that you took advantage of our relationship.
I really felt very bad about it. Nonetheless, I also agree that you have never been that kind of a person so far, and it’s quite possible that you didn’t have any idea that how I was going to take this. But, I still wanted to discuss it with you and tell you about my feelings.
I really don’t want to lose you as a friend, but at the same time I also know that if I don’t have a word with you regarding this, then it would eat me deep inside and, it would be really hard to be friends.
I expect that you will call me soon to say anything that I might not know yet. Let’s clear all the confusions this incident caused between us, and move on to happiness.
Look forward to hear from you.