My Dad has been with his OW for 19 years.. he never divorced my stepmother.. and the OW never divorced her husband.. they are both officially separated from their marriages but never spent the money on officially divorcing their spouses.
Their lives have gone on.. now neither LBS has gone on but my Dad and his GF have.. and they seem to have a very strong and lasting relationship.
There are many people that remain in the separated stage until they meet someone, fall in love and want to get married.. then they wrap up everything by filing and getting the D in order to marry again.
