So what Mr. Vijay Dutt reports there is that it has been proven by British researchers at Cambridge University that Females are, probably, attracted to married men because of the smell of another woman's skin they carry on their skins!
Experiments were conducted on mice, and the results could be the same for Homo Sapeins. The key is the chemical oxytocin, nicknamed “Attachment Hormone”, which is released during pregnancy, childbirth and sex.
The article ends with:
So if something is rotten in your marriage, woman, blame it on your smell. Even science let the man off easily.