depends how you define cheating really.
I have never had an emotionally connect relationship with anyone but my wife. But I may or may not have stuck my dick in a few places.
End of 2009 Predictions (Set, January 1st 2009)
Wii- 72 million 3rd Year Peak, better slate of releases
360- 37 million Should trend down slightly after 3rd year peak
PS3- 29 million Sales should pick up next year, 3rd year peak and price cut