And perhaps if you actually tried applying some of the advice you've been given, you might not even have the need to post here..
We have both had other people since then but never permanently totally ended the friendship due to one of them. I can only cite two reasons for this. Good real friends are really hard to find in this life. Her child who was born with timing which could mean I am his biological father resembles me. Why that hasn't been settled is very complicated..