She doesn't do anything to make me feel insecure.
It is from within me. If her and I were monogamous, I would have had the same insecurities.
She actually has a PhD in psychology. Nevertheless, she isn't my therapist. She is my lover.
I have resolved the specific insecurities that troubled me a month ago. Now, I'm insecure about having not been confident to begin with. That is what worries me. Since then I've tried acting confident around her, but slipped while doing so, because I was critiquing my every move.