Fear of trusting people due to past bad relationships or experiences – Pistanthrophobia
If you have it, advice from the goodmenproject.
But it did not even make it to the top ten phobias.
Alex Myles asks the question in this Elephant Journal article while making the case for, more for justification than for advice, trusting a cheater–upon certain conditions. Would you trust someone with a cheating past if the explanation was satisfactory and the relationship felt right, meaning the person seemed trustworthy now? Take the trust quiz to measure the trust in your relationship(s) now.