Smile, we all go through bad patches. It happens. You have apologized several times, once is all that was needed. It's time to put this behind us and move on with life. I understand that there are some who just hold on to grudges, hurts, whatever. That is on them not you. If they can't move beyond it than they are missing out on life, I feel sorry for them. It's a shame that those who can't move on are continuing to make you pay emotionally. It's just time to let this go and move on from it.
That's just my opinion for what it's worth.
Jacki