Guys fault for not making arrangements or a will.Also keep in mind ( check with your Lawyer) , when you do pass away , IF you have no other Children and lets say you did NOT complete you Will.. ALL of your Assets will go to your Sole Heir ..if you are married to the mother or not , Does not matter ..
I knew exactly such a person in NY City who had a daughter with a Woman from outside the US , and he literally had a one night thing with her many years ago , he had very little contact with his daughter , although he did pay her College . He had Zero relationship with the mother , just some mail and phone contact .. the Daughter visited maybe 3 times in her life total . She is in her 20's ? Our Friends Mother warned him " one day she will come knocking at your door"
This Man had a Girlfriend in NY for many years ..but unfortunately NO Will could be found, when he died suddenly .
Guess who got ALL his assets .. the daughter .. and it was a good size chunk of Money, 2 F&C houses , Expensive Cars , his retirement Money . 7 figures .
We had a front Row seat to all of it . The Woman who was his GF and who did everything for him for many decades, was absolutely furious .
She did not get a Dime as they were never married .
So keep that in the back of your mind when you are fooling around ... Play stupid games win stupid prizes...