I am not saying this is or is not what you are describing [I'm not a professional but my totally amature opinion is that it's not], but you may want to look into therapeutic treatments for reactive attachment disorder.

Maybe specifically how the brain might be different in people who are diagnosed with it, and how the effort is made to rehabilitate that.

Since the difficulty in forming attachments [bonds] result from not developing that early on, so in a way that "part" of the brain is a bit handicapped, you may find something that could be applicable to your personal situation.

Sometimes it's hard to find specific information relating to our situation but you may find information or support looking in that area?