That’s a new one on me. I’d never even imagined the possibility until I read the article today by Jena Pincott. The basis is that it works in fruit fly and should be the same in humans. The protiens enter the female bloodstream and should breech the barriers of the brain, allowing the body’s reproductive system and the female’s attraction to other men be somewhat controled by their male partner.
Also, there has been testing done that shows that women are with men who don’t use condoms are happier than those who do. The study at SUNY Albany came to the conclusion, showing that the depression was less in women who were with unprotected partners.