What better option is that?
Nondenominational marriage vows include one to forsake all others.
If someone has another priority than his or her spouse—be it a hetero or homosexual liason, an addiction or time spent with friends, or anything or anyone else—they’ve broken the vows & gotten themselves kicked out of the house.
Maybe the next husband or wife will be an actual grown up. The only alternative I see here another poster mentioned some tome ago on a similar thread—a year long mentoring program sponsored by the Roman Catholic Church BEFORE marriage, teaching the responsibilities of marriage & helping weed out incompatible couples before they made the vows.