Viewing private photos on Facebook is really easy actually, I have done it to one of my ex boyfriends to find out what kind of girl he was dating now and not only did I find out he was a chick that was fugly as hell, but he also put on a bunch of weight and looked like crap too hahaha!!
Anyway I just wrote an answer about how to get access to pretty much anyone's private photos and see all their stuff, so take a look here: http://technology.blurtit.com/3955992/how-to-view-private-facebook-pictures
Also if you want to connect some more you can add me personally on Facebook: https://www.facebook.com/eva.germana.9
DISCLAIMER: Please don't use the info I have linked to in a bad way. I am only sharing this for people who genuinely need to get info/deal with people that have screwed them over or dealt with them in a bad way. Don't be a hater, be a lover xx