The reason women cheat:
1.) Man was a challenge early on in the relationship. He went to the gym, had friends, options, scarcity, always looking for the upgrade and made the woman chase. After a while, he decided to be content with the woman, got lazy, wasnt a challenge, etc. Man starts becoming more of a beta than he ever was early on. Woman doesnt like the man he is becoming and starts her search over.
2.) Man gives woman too much attention (texts, calls, dates, spending too much money on the chick, etc) because he put her on a pedestal. Over time, he becomes his normal self and she isnt getting the beta lovey dovey texts all the time, not as much attention, the expensive dates are less frequent, etc.
3.) She is a wh0re who is going to cheat regardless.
How you avoid these things from happening:
1.) Do not lose frame. Its ok to back off the game a little after you're with someone for a while, but you have to remain somewhat a challenge.
2.) Be yourself from the start. Dont try to be someone else. Sooner or later, your normal self will shine through and if she doesnt like that version, she will start looking around. Dont pedestalize a woman and go all out from the beginning. She hasnt earned that yet. Start slow, hold frame. If you go to the gym, keep going. Play golf, keep playing. Dont change for a woman. If she is accepting to your lifestyle early on, she will accept it later.
3.) If she is a wh0re, you should see the red flags early on and should never get into an emotional investment where any of this even matters. Pump and dump.