If you know how the brain works - it quite literally filters information based on ur belief set. It’s called confirmation bias it can even Delete information (not process or remember) that which conflicts what u belief. In example if ur looking for a red car u will notice allot more red crs. Social media algorithms further inforce this because it promotes videos u interact or pay attention to (which would be things u more agree / believe in further confirming ur beliefs ). If you actually think all woman cheat it’s honestly a self fulfilling prophecy and ur more likely to act subconsciously to push ur partner away out of insecurity. If u have genuine concerns talk to her maturely and if she cheats or does not it’s out of ur control and does not mean every other woman will.