Everyone thinks that their case is 'special' or 'different' from every other instance of [insert situation here] on the face of the earth. The fact is, your situation probably isn't different or special. If you did something shitty to a friend, you did something shitty to a friend. It doesn't matter whether you 'meant' to do it or not, or if you think that you had special circumstances. There are certain rules in friendships, and when you ignore them, you've got to be willing to face the consequences. Those consequences will likely include the end of that friendship.
Believe me, I know. I've unintentionally done shitty things to friends, and had to give up friendships. Luckily, I think I've learned from those mistakes, because I have never repeated them. Unfortunately, I lost some really good people from my life.
So why am I blogging about this on a 'writing blog' day? Well, I haven't written anything! I've been busy moving and unpacking. But there is a story percolating inside my brain... and I'm almost ready to write it.
You really shouldn't mess with a writer. Fiction is a great place for revenge!