What is the attachment type of this person?

They were securely attached for many years, until a very disruptive long term relationship which left him traumatized, he never had a relationship last longer than a year since then and he is nowadays scared of commitment, responsibility and drama. He craves emotional intimacy, but he fails to maintain it or to commit. He has high expectations from relationships and doesn’t want to commit until he reaches all his goals and finishes all his bucket list.

What is the attachment type of this person?
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