Have you ever wondered why some people if they hurt a friend regret it forever. I hurt a friend 2 years ago and it cost me a friend and that I still regret to this day. Just a couple words spoken in anger and my friend was gone she put me on ignore and has never taken me off. It is hard to make things right if the person does not talk to you.
Then you will find the person who will hurt friends feelings and not care they did it I am not sure how someone lives with no regrets in hurting a friend but there are many people like that out there.
About 25 years ago I had a Christmas diner for the family, and it did not go well. I was disrespected by several people in my own family, and even after I tried to get them to see they had hurt my feelings, but a couple of them did not care. Some acted like they did nothing wrong , like it was ok to disrespect me in my own home. The ironic part of this is BOTH of the ones that did not want to say sorry were church people. My sister had been a deaconess of her church for many years, and my sister in law has a mother that is a lay preacher, so yea they should have understood saying sorry.