1. Don’t get married.
2. If she says the baby is yours, get the blood type and DNA test. Know for sure.
3. I wrote about it somewhere, but it’s conceivable that I knocked up a married woman while we were both at a business conference. Not guaranteed by any means, but the timing lines up suspiciously well. Guys who get good at game become the guys who are cheat with.
4. If we lived in a society that gave a damn about men, we’d have automatic DNA testing at birth. But we don’t.