I feel I owe someone an apology. I am genuinely sorry and want to express that but I'm not sure it will be appreciated.
I'm genuinely sorry for upsetting them, very unintentional, I underestimated how they felt about something, they kept professing the opposite. Now they are very annoyed with me.
When is it better not to apologise? I almost feel I'm being selfish contacting them to apologise. Am I just making myself feel better?