Charles was studying symbolic interactionism in his sociology class. Charles was surprised to find that sociologists who take this viewpoint think that having love as the central reason for people to get married .

actually may cause a weakening of the marriage            

Explanation:

Symbolic interactionism: In sociology, the term "symbolic interactionism" is described as a phenomenon that is focused on the exquisite relationship among different individuals or persons in a specific society. A researcher who is engaged in applying "symbolic-interactionist" thinking-pattern sees the specific interaction pattern between different people. However, it also involves "one-to-one" interaction.

In the question above, the given statement signifies that according to the symbolic interactionist viewpoint an individual who is engaged in love marriage often experience weakening in the bond of marriage.