Similar results were found using PREPARE/ENRICH data, where engaged cohabiting couples had about the same percentage of Vitalized couples (51%) compared to dating non-cohabiting couples (51%) or engaged non-cohabiting couples (60%). The most problematic group was dating cohabiting (not engaged) couples where only 21% were Vitalized and 48% were Conflicted.
The world continues to change. Commitment, however, still seems to be a key ingredient. It is certainly the road to a deep and satifsying relationship.