Dear Queenie,
A long time ago I did something that offended someone I cared about and since then they have refused to have any contact with me.
Queenie, I would like to tell them how sorry I am for what I did. Would it be okay to get in touch with them for that?—Remorseful
Dear Remorseful,
It might make you feel better to get in touch and apologise, but if whatever happened was so serious that you were shut out of their life it might make the other person unhappy to have to remember what happened. Try to find a way to forgive yourself, but do not bother the other person.