Cheating is generally pretty logical. Men tend to never be satisfied...i.e, there is a guy with a BMW 750..and although it's a nice ride, he sees the Lexus LS and would like to take it for a spin also. The same goes for a relationship. Someone may have nice girl that treats him right...but then he sees the one with the nice a**...he then gets the one with the nice a**...but then he sees one with big titties...etc. I generally, feel attracted to intellect..I cannot negate the fact that beauty is also a relevance...but nothing is more of a turn-off to me than lack of character, intellect and good hygiene.