two ways in how cultural views can affect relationship
Answers
The culture the couple lives in will have expectations upon how the couple should act and think towards each other.
Some cultures expect women to wear covering and not drive. In this example you would see a man who consciously or subconsciously considers himself superior, if nothing else, regarding the things that he is able to do and that she is not.
In western cultures the laws are leveraged to favor to the woman in regard to relationships.
This is shown affecting (in some way great or small) the society in statistics as you see a dramatic decrease in marriage.
Some postulate that the dramatic drop in marriage rates (in Western cultures) is because marriage (contract) offers no benefit to the man and is a major contributor to the drops that are being seen.
in Japan you see (driven by what are known as Herbivores) 60% (or more, as this study was done in 2016) of men between 20–30 not choosing to be married (or be in relationships whatsoever) it's becoming an epidemic such that they are considering passing laws to deal with this.
The drastic birth rate decline in Japan has heavily impacted the country's economy such that it is becoming a critical issue.
An American version of this is called: MGTOW, which stands for Men Going Their Own Way is in the rise.
The MGTOW movement has no “structure” or group that can be attacked, as they do not propose to make any changes to society, but instead choose not to participate in marriage.
Often confused with MRA, (men's rights activists) who seek to change the laws such that they are equitable in the court system regarding men, MGTOW so not seek change of society or laws, choosing instead to simply not participate in relationships.
Barring a law that will force MGTOW to be married, there's nothing that can be done about this movement.
Unlike the Herbivore in Japan, there are different types of MGTOW, thusly the title, men going their own way.
Consulting “Google Trends MGTOW’, we find awareness in Western culture skyrocketing.
The influx of viewers and videos on YouTube regarding the subject is growing so quickly that within the last month YouTube has ‘demonetized’ much of the video content as viewership is exponentially skyrocketing and advertisers struggle to understand how to market to this unique demographic.
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A better question would've been:
“How does culture NOT affect relationships?”
The a shorter answer could have been given:
Culture and society always affects relationships in some way realized or not. And usually it's a lot more than you would believe or know.