If has broken your trust enough to make you feel uncomfortable about trusting you then, it’s a clear indication that something isn’t right.
Every relationship has good and bad days. But if the bad days out number the good ones then there’s something seriously wrong.
He may have made several promises to change or about your future together but he never follows up on them.
He wouldn’t show any respect for your values and beliefs and would constantly make you feel that you are wrong and need to change.
When you reach a point where you feel toxic in their presence, then all you will notice is what is `'bad`' about them.