You are not alone. You are cared for deeply. It's hard to always see this when it is such a new thing, but it is such an old thing too. My dog loves me too and sometimes that is enough, but don't forget that you are loved. You are loved. You are loved.
The curse of BPD is so huge and crushing, I know.
But you are loved. You are accepted. These words will come and go in your mind, but please keep coming back to them because they are true.