<human>: Here's the situation: I'm 26 and she's 25, and we moved in together about a month ago.  We'd been dating for about 6 months before that, and have been friends for about two years. She broke up with her boyfriend a couple of months before we started dating.   

Before we moved in, one of the many things we discussed was what we would do with pictures and mementos and such that we both still had from our previous relationships.  We agreed that we could keep pictures from our previous relationships, but that we'd delete anything sexual.  She was particularly firm on this point, and I thought it was quite reasonable, so I deleted anything I had like this.  

Fast forward.  We've moved in, and the few times I've gone to use her computer (I was being too lazy to turn mine on or whatever), she acts strange and keeps an eye on me while I use it.  When she leaves for work, she locks it (I don't keep a password on mine; any pictures I've kept are completely innocuous).  One day, she forgot to lock it, and I shamefully admit that I snooped.  I found lots and lots of sexy pictures of herself and her ex that they presumably sent to each other before we were dating, including a video of them in a room as they were about to have sex.  

I can't confront her about it without admitting that I snooped, which I know was wrong.  But I don't understand why she'd keep these pictures, especially after we discussed it and she was so adamant that I get rid of such things.  

What should I do?  Has anybody else dealt with something like this?

Could you distill the essence of the text into 1-3 sentences?
<bot>: GF kept sexy pictures of her with her ex after we moved in and she expected me to delete pictures I had with my ex.