stealing my personality

I'm curious.....has anyone else felt like the N was trying to steal your personality? It sounds crazy to ask this but I felt like he took parts of me and made them his own, I'm a creative cook and he would copy my ideas and then say they were his, sayings I would say to him I would hear him use with others. I made food for a work function for him and he said he made it. It sounds petty but those are some of the things that I was proud of about me. Anyone's thoughts or am I just looking for stuff.