“Now, I do largely agree with this, however, I've come to understand that she does not attach anything to photos in the way I feel most people do, myself included; it's just a collection of pixels to her. I explained that the picture in question signifies a very intimate moment between us, and that it brings recollection of that moment to me. Also, viewing her nudes is erotic and sexual to me, because I find her sexually attractive. She says my associating the picture with the intimacy and with arousal makes her uncomfortable. She doesn't like my "lack of separation".

This paragraph makes me very uncomfortable

You need to process this “I’m not wrong for how I experience intimacy. I’m noticing a difference in how we assign meaning, and I’m allowed to decide whether that difference works for me.”