Yeah, I agree with Muay. People with BPD aren't purposefully being manipulative, and most don't even realize that they are being manipulative. It's the only way some borderlines know how to get what they need.

I too am blunt and honest with my friends and family, and it's not because I'm being manipulative, I just figured that being open with people was better than bottling everything up. Of course, there are unhealthy ways of doing this, which is what my problem is.

I've read somewhere that this behavior is encouraged when the borderline's support system gives them extraordinary amounts of attention during crises, i.e threatening/attempting suicide and self-harming, which makes a lot of sense in my case. The people around me were giving me the attention I needed during crises, and not when I was stable.