Really?!

Someone brought up a topic earlier I thought was interesting.  A friend of mine told me how her sig. other likes to browse pics of random female friends of his friends and her friends (basically friends of friends who are females).  Why?  No clue.  It bothers her, and, to be honest, I wouldn't like it either.  It's one thing if he's met that person, but it's another thing if he never did/has.  It makes one wonder - why are you checking out pics of that girl?  And it's not like the pics include the mutual friend in there.  Actually, the more I think about it, the more I'm annoyed.  Seriously, I wouldn't like my sig. other looking through photos of my girl friends, especially if I'm not in those pics.  It would make me think that they're curious about other women or checking out other women, and I would therefore think the guy is not completely happy in the relationship.  Really, what is the point to be looking at those photos anyway?  I'm one of those who are self-conscious, so something like this definitely bothers me.  It's like asking for trouble.  I found out my ex did that while we were together (one of the few things that really got to me), and obviously that relationship didn't go well.  Heck no, I ain't putting up w/ that sh!t.