Why are so many men aroused by cuckolding? Even if they’re jealous? What excites some guys about MFM (Male-Female-Male) threesomes or gangbangs, even if they don't identify as gay or bi? One explanation lies in the Sperm Wars theory of evolutionary biology. For a more detailed description, go to http://drsusanblockinstitute.com/sper... For telephone sex therapy with the Dr. Susan Block Institute, call 310.568.0066. Make Sperm Wars, Not Real Wars!

provided by Dr. Susan Block Institute