It’s strange to have actively gone through someone else’s belongings when they weren’t there.

It sure is. But it's the forbidden thrill and the curiosity of looking candidly into the lives of others.

If she was moving in with you

She's not. She's the one with an apartment, I live with my dad. I'm still just a guest in her apartment. Usually a very appreciated guest.

What do you mean by snooping in her privates?

It was a huge embarrassment for her and she definitely felt violated by it. I don't feel like I need to be explicit about it, at least I don't feel comfortable putting it explicitly here. Could be in her binders, her drawers, whatever. It was personal to her. The item in question was thrown away during the move.