<human>: I've been dating my BF for 2.5 years. This morning when he was at work (I took the day off, and stayed the night at his place), I was using his computer and found a folder in one of his hard drive's that had over a hundred folders of different girls/women sorted by name, alphabetically. Each folder was full of their Facebook/Instagram photos. Nothing overly provocative, and I didn't recognize any of the women as his friends or anything. Seems like all these women were very attractive, a lot of photos in bikini's or dresses, etc. 

Is this normal behavior for a man? Should I confront him or is this nothing to be worried about? We have an otherwise great/healthy relationship with lots of intimacy.

Summarize the given text in a few sentences.
<bot>: Found my bf's stash of images of Facebook/Instagram girls, categorized and sorted eerily. Is this normal? How should I deal with this?