Yes!
Dating before marriage is not allowed per all religions. However, dating is common outside marriage by all non adherents to religions and citizens in France are not exceptions.
If the 'illegal' marriage was registered then yes.
it varies in different conturies and religions. in general yes.
No
love before marriage is when you see love at first sight and stay together until you get married
Yes
Yes , but it was illegal for that amount of time, polygoms is illegal in USA
It is a matter of opinion and no ones business, but the couple involved. For convenience sakes many young people (even some older individuals) will live together without getting married or live together until they do get married. It is only wrong is eyes of the couple. The downside of living together before marriage is the couple has been living like a married couple so it takes the excitement and joy out of any upcoming wedding because what is left? The couple has lived together for 1 or more years; done the same things a married couple does and by getting married they have lost the part of the excitement of not living together and waiting for the day of their wedding and then having their wedding night whether they have had a sexual relationship before or not. Then they get to live together and experience the joys and some downsides and make a future for themselves.
Yes or that is polygamy and is illegal
A marriage before a divorce become legal is called bigamy and it's illegal in the USA
This is totally up to the individual. Sex before marriage is a sin in many religions. However, it is up to the individuals involved to determine when is the appropriate time to be having sex.
The numbers indicate NO!