Heartache, confusion, and anger are the usual results when a secret affair is revealed. Throughout history, men have always felt entitled to more than one lover for the main purpose of bearing heirs. Some may argue that it is in our biological nature as humans to desire multiple partners. For example, animals remain monogamous for about four years, or as long as necessary to protect the young. Although most men won't admit it, many have had sexual encounters with a prostitute at some point in their lives.
Men seem to feel more free and relaxed when there is no emotional connection with a sexual partner.
Fulfilling something perceived to be missing in current relationship No longer finding partner sexy or attractive Sex may be readily available with another Women seem to have a natural instinct to detect when their man has been with another woman. Although some may confront the issue at the first obvious sign, others don't want to believe that their man is cheating, regardless of the evidence. It is a misconception to believe that a relationship should always be progressing smoothly on the road to eternal bliss. However, focusing on the negative will just lead one to perceive they are so miserable that they seek to fulfill their needs elsewhere. Cheating usually offers instant gratification, physically and emotionally.