Relationships are difficult to navigate, but there are simple ways to find out if somebody is at least a good human. For example: seeing how they treat animals.
People are sharing the red flags that immediately make them suspicious of somebody, or back away from them altogether. Writer Lauren Chanel Allen got the ball rolling by warning everyone to steer clear of people who quote the political philosophy book "The 48 Laws of Power" in everyday life, which can be pretty scary.
From small things like museum etiquette to big things like values, here are "red flags" people have picked up on that make for a handy manual.