Looking back, do you agree this relationship has become dysfunctional? Added to that, police and children's services got involved and for a few months you weren't even able to return home. That's scary.
Would you agree that your current situation is somewhat dangerous? A thought I learned here years ago made an impact on me...
If it has been threatened or even just contemplated, it will
happen, given enough time and opportunity.My question is, should you be pondering now only the issue of physical and emotional affairs? There is far more going on here than the issue of trust.
I want to sit down and talk to her but she just explodes in fits of rage and then yells at me to stop arguing which I'm not, there have been times where I get fed up and lose my [cool] and tell her to piss off and walk away but it takes a lot to get me there. All i want from her is to sit down and see if she wants to rescue this marriage.
You want to talk logic but your spouse is driven by varying emotions and perceptions (and probably more issues). Your inclination is to do what is called
JADE (Justify, Argue, Defend, Explain). Most here have tried that expecting it to work. It will work with reasonably normal, grounded persons, which she apparently is not. Obviously you've tried it many times before and failed. Your close relationship prevents her from listening, she is too overwhelmed with the closeness and emotional baggage of the past to overcome.
I want her to seek help, I want to have the hard discussion but I don't think she will and I just don't know how to approach it.
One indicator that there might be hope for the marriage is whether she will agree to some sort of couples counseling along with meaningful personal therapy counseling for both of you. It is likely a struggle to accomplish since a person with Borderline traits is easily triggered and often quick to deny, retaliate, Blame and Blame Shift. Approaches that should work better would be SET, DEARMAN, BIFF, etc which are also described in topics on our Tools & Skills Workshops board.
This is peer support, many of us have been in your shoes. It's so very tough. And the outcomes are too often a failure of the relationship. The good thing is that you're trying. But a key for a relationship to succeed is that both need to be working together.