this thread has been prompted by a comment on the 'all men are bastard thread' to the effect that lots of men cheat on their wives.
The obvious (to me) question is, who are they cheating with?
Probably with women who are themselves cheating..
(or is there a small pool of single women who share themselves around attached unfaithful men?
)
Mobile phones and internet dating have made it very easy to look for extra curricular relationships/hookups, so people with leanings in that direction are more likely to act on their urges.
Further more if everyone is doing it, well it starts to look 'normal' 
I'm not condoning cheating, but when advances in technology mean that your mobile phone is replaced by a microchip in your brain, granting you a form of telepathy, well, what then?