Hi fkamontijo,
Welcome to bpdfamily, I'm glad you posted and let us know how you're doing.
I came to the forum with many of the same questions you have, feeling much the way you describe your own state of mind. It takes time to make sense of these disordered relationships, and when there are active divorce proceedings and kids involved, our stress can feel stratospheric. This makes it harder to think clearly.
To start, I highly recommend reading Spitting: Protecting Yourself While Divorcing a NPD/BPD Spouse by Bill Eddy (who also has a lot of information on his site,
www.highconflictinstitute.com). Eddy was a former social worker who became a family law attorney, and he began to realize that 80 percent of divorces were low-conflict, and 20 were high-conflict, and of those 20, most had a spouse with a personality disorder. He has written at length about how to take an assertive approach to custody and divorce battles. For those of us who don't know anything about legal proceedings, this is a godsend.
Communicating with him once each week on Thursdays is a good strategy to help you take care of yourself. If your case goes to court, and you share the kinds of emails he sends, it will be very clear that your strategy is reasonable and needed.
Every time his GF sends you an email like the ones she has sent, keep it. Keep everything, document all of it. Document, document, document. The Achilles heel of many people with BPD is that they are not consistent and methodical in their thinking, and are instead impulsive and retaliatory. The more you document, the more you can paint a picture of his lack of credibility. Your husband does not take responsibility for his bad behaviors, he blames them on you -- he will continue to do this throughout the divorce, even if deep down he does not want the kids. Your job is to hold up a mirror to his allegations so that the court can judge who is more credible.
It works in your favor that he does not see the kids much. Courts tend to go with the status quo because they don't want to change things too much for the kids, and they figure that whatever you decide informally outside the court must be best.
There is a lot to take in. This place was a godsend for me, and in many ways equally if not more helpful than my own lawyer, who was very good. There is a lot of collective wisdom here from people who have walked in your shoes.
You're not alone
LnL