Women mostly don't realize that they hold a ton of leverage in a marriage. I know guys who've opened their marriages at their wife's request, and they had a grand old time, and then somewhere around the point where everything becomes community property and spousal support is guaranteed, their wives walked with half, and a very comfortable paycheck.

 
Men would be good to, at minimum, understand the position they find themselves in, and act accordingly.

He got a pass but I don't think that his wife meant for him  to poach her sister.

everything you see in a movie.

 
When watching a movie keep this word in mind ........Fiction

My assumption has always been that guys are eager for a hall pass, until they realize that it extends the same freedom to the wife.  And, in many cases, the wife ends up getting more opportunities to exercise the pass than the husband.

 
Then, the pass isn't so much fun.

Theoretically getting married in your twenties is the ticket to a comfortable life -- until wifey gets bored and you get gang raped in divorce court.  I used to advise marriage based on the likely financial benefits.  But now seeing how ANY wife can go from girl-next-door to Cartel assassin, the risk is no longer ignorable.