90% of nba players have girlfriends in every city they play if not more. Some even have babies that their wifes dont know about.
kobe just got owned and for being so known to public it only makes things worse for him. Not to mention shit like this happens to dozens of them, are they all rapists? I dont think so, some women will go far to get what they want. that is all.
Besides, no matter how beatiful your wife is after a while you get tired of fucking her and you start looking elsewhere. For people like kobe the opportunities are endless.
after all most humans always want more, better etc etc.