I know it may sound crazy but, if your chick knows other women are after you, and your faithful while able to hold down resposibilities, you have a higher chance of keeping your relationship strong, then someone who is just there when around women. Women always want what others want. It will also keep her sex drive strong. The same for men, unless he can't handle other men eyeing his lady. If you have issues with control or jealousy, or hang out where guys are disrespectful towards sexy women so you have to fight all the time, you better have your lady looking like she just got through cooking, and have a boring relationship as time goes on. This boring shyt is why people cheat. Just having people want you or your mate is enough to keep that sexual energy strong between the two of you.