Pokin' a little fun at Mom.
Actually, divorce is at a horendous rate. What is it now? 6 out of 10. Its awful. And so many suffer from this sin. A good example of how public sin really is!
The first recorded "offical" marriage was I believe Ahab and Jezebel ...Before that time a man taking his "bride " into his tent and having sex with her constituted a marriage
On that topic God say and the two became one flesh
If in Gods eyes sex seals a marriage..then kids, that have slept with a series of people are ACTUALLY married to the first one and all others after that (including the one they had a ceremony with) are 'adulterous'