Thank you for your advice it was so sudden to see him go from this loving person to saying awful things and breaking up with me at of the blue it was only later that he disclosed his diagnosis. I am neurodivergent so used to looking for ways to communicate and have spent so long trying to understand BPD and how I can be supportive but was at a loss on what else to do as I don’t want to make anything harder for him
It's actually pretty common with BPDs because they think, "If they knew who I really was and how messed up my thoughts are sometimes, they'd surely leave." So things are hidden as they try to work through problems emotionally...not logically...and that's like trying to fix your car with a rubber spatula. The two things just don't go together and eventually frustration boils over.
Just know that he does not hate you and this is not your fault. He is sick and struggling, spiraling. Don't take the hurtful words he said to chase you off as his actual identity. In stressful times, we all say things that we wish we could take back. That's 100x true for BPDs when they're in crisis.
And to make matters worse, they may not even remember what they said or how it could be taken as hurtful.
Why? Let's go back to a physical example. I slam my hand in a car door and at the same time, you're asking me if I like chocolate chips on my pancakes (well duh, who doesn't?!?). In that specific moment though, it would seem like the dumbest question in the world because I'm ONLY focusing on how badly my fingers hurt. And if you were there to see what happened, you would never ask that question to begin with because you understand how painful it must be.
For BPDs though, they could be in the same level of emotional pain (which we can't see) and when you engage them, they're thinking, "How can this person who says they love me not see how my world is collapsing right now?!?" So they say something to you about what we think is an ordinary thing, we respond in an ordinary way, and they explode.
The thing they're saying is rarely the actual problem though- that's what they're complaining about to mask the actual problem (mental health and disordered thinking). I hope that helps.