impregnation legal issues ?

I have a hypothetical question and would really like hear from people who have information on this issue. Lets say a couple asks me to conceive the wife and she unexpectedly gets attached to me, and she is crazy enough to leave the husband wants to get into my life. I guess any court in the world is likely to rule against me in case of a lawsuit. Is there any way to cover myself for such a situation. Not that I'm the dream of everywomen just want to know about the possibilities.
thanks for any replies

In most states I think your fine if he put his name on the birth certificate.

Then there is the matter of do they know your last name.

No last name, no ss#, and no license plate # (from your car when u meet them)

How will they know?

Good luck and keep helping with the population growth!