Christians, whether married before or after becoming Christians , cannot remarry, except for adultery and being widowed.

https://www.gospelway.com/family/divorce_remarriage.php

America is so dysfunctional because of a lack of values. 100 years ago, marriages were honored, and sex outside of marriage was nearly unheard of, and widely stigmatized.

Today, the exact opposite is true. Marriage is dishonored and sex outside of marriage is commonplace.