don't ever feel like you're talking too much. Believe me, that's what this place is for! Keep it up it will help to hear what people have to say, even if it's every little detail of your emotions and challenges right now.

I know it's helped me a ton to be able to talk about stuff here.

the feelings of rejection, being avoided, abandoned are all just part of your wonderful buffet of BPD traits. I'm sure you didn't do anything. Something conscious or unconscious may have triggered these feelings. You're doign the right thing posting here and asking. That's a good step. At the very least hopefully we can make you feel like you belong and are accepted as you are.

*hugs*
~s4