Sadhguru
Why do I stop trusting people after repeated break-ups?
Serial heartbreaks close you off
Serial heartbreaks may look like fun for some time, but after a while you just don't trust anybody. Your emotions never cross the barriers, and you are always cautious.
If you have one heartbreak after another, it looks like fun for a while. After some time you stop trusting anybody in your life, because another human being always seems a problem.