Why do we apes act so stupidly (yes I said apes not the term "human/people") we as a species are ment to shag anything that walks on two legs. The reason we cheat is due to instict men shag many women vis versa only to keep the vitality and exsistance of our race going for the next genreation. Look at Lions and Tigers they shag any number of lioness same with the tigers to keep thier species alive plus we are similar to the Wolf the male will stay with one female until she dies ot leaves. Teenage boys/girls rebel against the parents to asert thier independance and dominace it is INSTINCTUAL. Lastly when I see a parent shout at thier kid(s) they forget that they were like that once playing up thier parents it is a never ending loop.