Women are not good at cheating at their partners, before a woman cheats on her lover, she might have complained severally and been ignored severally, cried many nights but ignored, women are like kids she can't be crying for orange and you will give her mango.
but let me go straight to most of the things that can cause a woman to cheat on her husband
1. Most Women cheat to get back at their husband's adulterous lifestyle.
2. Lack of affection
3. Lack of financial support
4 lack of sexual satisfaction or may be ignored by a partner.
I have heard of some women who have cried for about 10 years now, whose husbands has been neglecting them sexuallly.
Two reasons dominate the other and that is sexual satisfactions and financial support. A woman need to be cared for, cuddled, trimmed, proded and appreciated.
The moment you start ignoring her she will start  complaining at the right time unlike men who would keep their annoyance in their heart.
NOTE FOR WOMEN ONLY:
http://growinluv.com/2018/11/15/why-women-cheat-on-their-men/

small dick use to cause it sometime

Why SOME women cheat:

1. because those women are hoes.
2. because they are whores.
3. because they are sluts.
4. because they are bitches