THE COLD BLOODED PERSONALITY TYPE.

What exactly forms this 'avoid attachment' personality type? The answer of this unfavorable designation is mothers' general unresponsiveness to their new born. They are averse to close bodily contact and physical warmth, also they are emotionally unavailable, distant, and withdrawn, which leaves the infant's bid for such essential nurture, routinely frustrated.
Accompanying  this rejecting stance, such mothers can also betray anger and even open hostility toward the baby, and particularly when the child is making desperate attempts to establish an intimate connection with them. That is, when the infant is intensely seeking attention or affection, they are most likely to respond in punishing ways. Also they demonstrate little tolerance for their child when the child is expressing negative emotions, particularly their own anger in reaction to being rebuffed.
On the other hand, when the baby is engrossed in exploratory activity, these mothers -peculiarly insensitive to, or imperceptive of, their child's state of mind or feeling -are likely to interfere. Such intrusiveness prompts the child to feel violated, engulfed, or suffocated.
In short, mothers are unavailable, and rejecting when the baby craves closeness and apt to behave invasively when the baby requires alone time. Their lack of attune to their child's behavior provoke the formation of this cold blooded personality in the child, because such disharmonious parenting leaves the child feeling extremely frustrated, emotionally unfilled, and insecure.
Later in life the nature of this child's personality will evolve as someone detached, preoccupied, and not at all open or friendly, keeping himself/herself at a distant. If someone will try to say something or do something to easy the cold wall built around him/her, the response pretty much will nullify the effort.
When this cold blooded personality type engages in a romantic  relationship, it will start out promising, but over time his/her companion will confront the fact that the other person really won't let he/she in.
Despite all the attempts to grow their connection as a couple, to make it more mutual and heartfelt, he/she will prefer to leave it as it begun, uncommitted, relatively superficial, and impersonal. Any natural progression, at least emotional intimacy, simply it will not happen, and the constant trying to have more patience, to cut the other person more slack, or make allowances, ultimately will not make any difference in the uncomfortable feeling of just being there with no connection at all.
Hopefully for you, this is a relationship you must walk away from, because you are dealing with a person who might best be understood as having an 'avoid attachment disorder.'