But the book does suggest, If I recall, that the best way to convince a woman you will stick around and raise kids with her is for your genes to make you very much in love with her and make you want to raise kids with her.

Some men supposedly have genes that make them fake being in love, but the book suggests women have genes that will try to sort out these fakers through natural lie detection, with varying result.

Of course, you could choose to take what I just stated with a grain of salt.