When it came to −1438 A/G, men who carried its G-allele variation were rated as more desirable potential mates and were more likely to receive second date offers. In contrast, women who carried this G-allele were more likely to be given the cold shoulder by men. With A118G, women with the G-allele enjoyed greater speed-dating success. However, their male counterparts weren’t as lucky. Men with this G-allele were less desirable to their speed-dating partners.