I have been in an open relationship for several years now. I feel that partners who are not using protection should let their partner know when they start seeing others and having unprotected sex. In my situation the understanding initially was that protection would be used with other people. My partner now states that it is none of my business whether or not he is seeing other people and became very indignant when questioned because I had obtained information that he was lying about not being with anyone else than the one person I knew about. I have told him I don't want to know any details other than if he is, especially since he has shown in the past that even though he says protection is best, he won't use it. How do others think I should proceed with this situation?
I care very much about him.