"To break a marriage" means to cause the marriage to end or fall apart, usually through actions or events that create problems or conflicts between the partners.
Sentences with «to break a marriage»
This section also has advice for people who are are moving forward with divorce and those who are suffering from broken marriages. (marriage.com)
I view this opportunity as much more than just employment, but as a distinct calling to help restore relationships and heal broken marriages. (familyandlifesolutions.com)