Great topic. I always appreciate what you write greenearthal.
What you say reminds me a little of an ex, who believed himself to be insensate. His came from an abusive childhood, however. I don't think he'd even be able to recognize his emotions if he had any.
I'd like to explore the word "need" more. Is it possible for them to have needs that you meet, so they attach them with you?
What needs of yours are being met by being in relationships in the first place?
My heart is too big to fit into one person.