I do have a toxic friend, well... dunno if we are still friends, but I was always there for her and after years not seeing each other because of distance, she traveled to my now country to visit me and it was sooo distructive, I was constantly thinking how many situations were happening, because we were supposed to haven fun, well... I decided that better than a friend, is my peace of mind and we barely talk nowadays and it feels just fine to me.
Great post, it makes me see that I did the right thing!