Please stop sexually exploiting your wife. And it is sexual exploitation - you are inducing her, via fraud, to send you photos for your sexual gratification. It’s non-consensual in that she would not consent to send you these photos if she knew you were you. You’re lying to yourself that it’s ok because you’ve had sex and seen her naked many times before, but past consent does not equal present/future consent.

What she is doing is not ok, but what you are doing is reprehensible. Stop. I don’t even really care if you confess to her what you’ve done, especially since it would probably be traumatic for her to learn the truth. But whether you tell her or not, stop it now.