The truth can hurt and getting feedback about flaws in our character is never easy. I admire your courage in asking for feedback — that is a sure sign of your growth!
Your reaction to your boyfriend encouraging you to take care of yourself more because he cares about you puts him in a bit of a double-bind. If he thinks you are doing something that isn’t healthy and doesn’t tell you because he’s afraid you’ll get mad, then he isn’t in a position to help you. If he tells you and you distance yourself from him, he will feel like he can’t help you grow. This isn’t a trust issue. You accused him of cheating when he hasn’t is your way of trying to explain your distancing on him, when the truth is these are your insecurities that have to be dealt with. Your boyfriend was trying to help and it was too much for you to hear.
It is time for you to learn how to manage your own emotional issues and insecurities in individual therapy. Help yourself and your relationship by understanding more about how to take feedback from those who are trying to help, and how to manage your insecurities. Your university is likely to have counseling services you can use.
Wishing you patience and peace,
Proof Positive Blog @ PsychCentral