Love is a socially constructed entity that has changed and developed its role in society over time. Love has not always been a staple in the institution of marriage, but has widely become a driving motivation and requirement within Western culture. Some researchers suggest that love is a basic human emotion just like happiness or anger, while others believe that it is a cultural phenomenon that arises partly due to social pressures and expectations. Research has found that romantic love exists in all cultures, which suggests that love has a strong biological component
So, the answer to your question is not straightforward. Love is a complex and multifaceted concept that has been shaped by biological, cultural, and social factors throughout history.