Found my dads porn stash.. Bisexual...?

Hey /r/gay. Throwaway for obvious reasons.. my very first throwaway account! Wohoo! But I'm very confused.. I'm a 20 year old gay male, not out to his parents. But I'm a little bit confused.. I went out to take a look at a few old pictures at our family pc and came across a map called "jogging" and was all curious as no one in our family jogs or w/e so I went on a clicked on it. And found out a whole stash of twink pictures, some with erects dicks on it and some fucking etc.. you know how your porn collections looks like.. so I just found this and am very confused on how to feel, this as my parents divorced about a year ago and myself am not out yet. Would this mean my dad possibly has been seeing men and divorced because of this... I'm just making very silly conclusions in my head..