It seemingly appears that they don’t have any emotional baggage or bad past experiences, yet they dont let people in their life easily.
The more people ‘protect’ themselves from vulnerable experiences, the more it reinforces the fear of what might happen. Each time I encounter the fearful circumstance I am reminding myself of what might happen, which is every bit as vivid as reality for me.
So I become more and more convinced that this possibility is a probability. This has the tragic consequence of keeping me further and further away from disproving the thing I fear.
Over time the person convinces themself that the fear is reality.