For me personally I wouldn’t. I think some people have the best intentions when reaching back out and some don’t of course, but I feel like it would just reopen old wounds for some people. And, I say that because a lot of people feel as if they can get “closure” from the person who hurt them and I just don’t think that’s how closure really works. I think closure is something you get from yourself. I also think you shouldn’t be so hard on yourself. I don’t know the situation obviously, but we’ve all cause pain in the process of discovering ourselves. It’s kind of how life goes even if you’re doing your best to not cause harm to anyone in your life it still happens because a lot of the time discovering who you are comes from lessons learned or from experience which a lot of the time results in pain.
Depending on how this person is and how hurt they are going back to explain why you hurt them whether it was intentional or not doesn’t take away the pain or lessen it. It doesn’t erase what was already done and just consider this that just because you caused pain towards someone you care about doesn’t mean you’re a bad person or you deserve hate. It just means that you’re human and it’s to be expected.
