Hi Timmy2012Sydney,
Welcome to the community! We're glad you are here.
At the top of this board you will find a thread that says
HOW TO GET THE MOST OUT OF THIS SITE. Within that thread there are many articles on communication tools and tips to help you deal with your BPD loved one. One of the articles is called
Arguing: Don't Engage. Perhaps that will help a little with answering your question.
I hope you will settle in, read and respond to others' posts here, and I think you will find that you are not alone. You have found a place where others understand. We get it here.
Again,
Blessings and peace,
Redeemed