<human>: Provide a brief overview of the text.

My BF of two years has this habit of creeping the photos of my girlfriends after meeting them. I have no idea whether or not I should be concerned about this. I know he does this because we live together and he is forgetful. He often leaves his laptop open on their home pages when he leaves for work. He never creeps men or my more unattractive friends, it appears. 

Now, I may get some serious scolding for this, but after I noticed this becoming a pattern (3 or 4 times), I checked his browsing history. It appeared that he wasn't just looking at their profiles and a few pictures, he would browse through 50-60 photos at a time... 

I just don't get it. Yes, most people creep on other people via FB, this isn't the problem. I have no problem with him looking at porn or photos of other women...but when it's my friends (and to the extent that I`ve seen)...I just feel odd about it. 

I should probably mention he does this A LOT. If it's not my friends, it's other girls he finds on Facebook who are mutual friends. He browses constantly, perhaps four or five times a week it appears.

Is this normal? Should I even be worried? I don't creep dudes like this, but I understand how it could be completely innocent. For context, things have been rocky between us lately. We are moving and both finishing degrees and are very stressed. Any info or similar experiences would be appreciated!
<bot>: BF creeps women on Facebook constantly. Not sure if I should be worried or not. Looking for opinions from people who may have insight.