First Rule of Dating
Never start a relationship
with someone you would not, in theory, marry
Learned that as a teenage boy
Never start a relationship
with someone you would not, in theory, marry
~~~
I think it’s a stereotype that females are immediately sizing up their dates as marriage material and that males don’t. Perhaps not as early as high school, but pretty early on I would be paying attention to everything about my dates and (sad to say it this way but it’s true) scoring them based on whether I thought it made them compatible for long term relationship (or marriage).
The other sad fact that I learned though is that some people are capable of hiding their darker and deeper personality flaws for a very long time. The worse it is, the more they hide it.