Welcome, we're glad to have you here though of course we all wish our situations were better.
There is a wonderful
Tools and Skills workshop board that has many fine threads. Here is the link and they will be sure to educate you and guide you on improved relationship skills.
https://bpdfamily.com/message_board/index.php?topic=329744.0They're all helpful but I want to draw your attention to the two topics on
Boundaries. We all thought boundaries were for the other person to abide by. Actually, boundaries are for us. Why? Because people with BPD (pwBPD) typically resist and fight against others setting limits on them. So we encourage a different approach.
Boundaries are for us. You'll read several examples how we can construct firm boundaries but I've always liked my simplified example or pattern. Rather than bluntly say "Do this!" or "Don't do that!" (likely to meet intense resistance and resentment) this alternate approach should reverse the tables and make our boundaries about our
response to poor behaviors, "If you (action) do or don't do ___ then I (response)will do or not do ___." Ponder that. Your boundary is that you state what will happen - your response - when a poor behavior occurs.
Maybe you will leave for an appropriate length of time. Or whatever is an appropriate response. The point is that the message is clear, you will not let poor behavior continue around you.
Of course, this may not work. If your relationship continues downhill, then yes it may end, but at least you won't be appeasing or tolerating abusive behavior, whether mild or extreme.
One caution... You don't have children together at this point. Children are a lifetime obligation, especially the first two decades. I was ignorant of a simple bit of advice, and paid the price when she refused to work with me and our relationship predictably imploded.
Having children does not fix serious relationship issues or a person's mental dysfunction. Rather it makes everything more complicated and more difficult, especially if the relationship later fails.Before you marry, before you have children, research acting-out relationships such as BPD, inform yourself of all it involves, learn needed tools, skills and strategies. Here in peer support you will learn much and it can supplement the aid you get locally and in person with therapists or counselors.