I have friends and family but nobody understands BPD.
This is why a lot of us talk here and in therapy. If you haven't dealt with and studied BPD, it's hard to understand what's going on.
I felt I should give him another chance. He promised a great future and blamed himself for current conflict.
I started to feel I got my old love back but he flipped out again today. I’m feeling worn down again and I’ve not even seen him since I ended it.
This is classic push/pull, pretty characteristic. You've seen it before and you'll see it again. Hang in there.
He’s already throwing everything back in my face. He said you should be able to rely on your partner 100% for everything.
I firmly disagree. Even in marriage, you need boundaries. No person should be made to feel responsible for meeting all of your needs...that's a huge weight to carry.
Is this right? Am I being mean by saying I can’t do something. He makes me so angry. I’m feeling sick and exhausted just from a 5 minute phone call.
I was so close to getting free and I got sucked in with his Bull.
It is not mean to say you can't do something. Setting boundaries should be a part of any healthy relationship. By nature, pwBPD do not have boundaries so it feels offensive when others set them. That's to be expected, no surprises. Just because he's offended doesn't mean you should give in or go along. You've got this. Trust your instincts.

You love him so what you're feeling and doing is very normal - we give loved ones another chance. Listen to your body, tense muscles, a sick feeling, exhaustion. What emotions are behind all of that? Think about them, identify them, and feel them. Think about what you can control. Think about what
you want and what
you can handle. He's shown you who he is, good and bad. How are
you? What do
you need? If it's overwhelming to think about your future, just focus on what you need today.