Divorce rates published in Buenos Aires City, Argentina

50% of couples will divorce after 10 years on average.
http://www.lanacion.com.ar/2020551-que-porcentaje-de-parejas-se-divorcia-y-cuanto-suelen-durar-los-matrimonios
https://www.estadisticaciudad.gob.ar/eyc/?p=50764
https://www.estadisticaciudad.gob.ar/eyc/?p=27444
https://www.estadisticaciudad.gob.ar/eyc/?p=55849


In the paper "Perceptions of Ideal and Former Partners' Personality and Similarity" Pieternel Dijkstra / Dick P. H. Barelds / University of Groningen, The Netherlands
The authors had written
".... mismatches in personality are a frequently mentioned cause for relationship break-up. If former partners indeed have dissimilar personalities, our findings underline how difficult it is for many people to select a mate with a similar personality, or, alternatively, how little value individuals put on finding a similar partner in terms of personality.
The present study's results, as well as the results found in previous studies (e.g., Eastwick & Finkel, 2008), may be used to educate people, especially singles, about what really matters in long-term relationships, for instance, similarity in personality, instead of complementarity."
http://onlinedatingsoundbarrier.blogspot.com.ar/2011/05/big-punch-to-behavioural-recommender.html
http://onlinedatingsoundbarrier.blogspot.com.ar/2012/07/two-papers-debunking-behavioural.html

Please see also:
"Only the congruent survive - Personality similarities in couples. Personality and Individual Differences"
http://onlinedatingsoundbarrier.blogspot.com.ar/2013/04/paper-partnership-longevity-and.html
"Partnership longevity and personality congruence in couples"
http://onlinedatingsoundbarrier.blogspot.com.ar/2010/04/only-congruent-survive-personality.html

and remember: The 8 tips to innovate in the Online Dating Industry!
http://onlinedatingsoundbarrier.blogspot.com.ar/2013/12/the-8-tips-to-innovate-in-online-dating.html  

Proof eHarmony is intoxicated with "Big Data Analysis"
http://onlinedatingsoundbarrier.blogspot.com.ar/2017/04/proof-eharmony-is-intoxicated-with-big.html

NEW and FRESH Online Dating Market 2017 (via Statista)
http://onlinedatingsoundbarrier.blogspot.com.ar/2017/05/new-and-fresh-online-dating-market-2017.html

Divorce trends in USA.

at page 38
The "institucional" model of marriage has been overwritten by the "soul mate" model, which sees marriage as primarily a "couple-centered" vehicle for personal growth, emotional intimacy, and shared consumption that depends for its survival on the happiness of both spouses.

at page 71
key finding: The American divorce rate today is nearly twice that of 1960, but it has declined since hitting the highest point in our history in the early 1980s. The average couple marrying for the first time now has a lifetime probability of divorce or separation somewhere between 40 and 50 percent.

graphics at pages 19, 20, 40 and 70

See also the previous post "about divorce statistics at eHarmony"
More of "Trends in Marriage, Cohabitation, and Divorce" at eHarmonyLabs