Is it border line pedo?

So I know we all have kinks and so one of mine and my bfs is I enjoy being and talking like a little girl and I've always had that secret fantasy during sex and I just enjoy calling myself a little girl or whatever. Anyways earlier he asked me if it was ok for him to think of me as how when I was little cux he has a pic of me small and he asked when we're talking like that, that he imagines me small like that? And to me it felt a bit much like obviously I don't want him to imagine me as a kid when I was actually small cuz that's a bit weird but then again I did allow him to be with me this way but idk if I'm overthinking it to where he maybe doesn't mean to sound like a pedo or something? Idk I need help and thoughts on this pls!