I am sorry, this sounds like a hard place to be in I am wondering if you could wrote down in an email to your t what you need and don't send it.
It seems like all of these people have different boundaries and rules but it doesn't appear to be rejecting, somewhere along the way your brain confused that with rejecting. Probably because you had some experience with being rejected and told you are too much. How were your parents when you looked for support and nurturing as a child. I am betting they didn't give you any(I hope I am wrong)
Can we support you in anyway?
I know we are not there in front of you but we are real and we care.