Cheating is a common cause of many marriages that break especially in women. below are the signs that a woman is cheating.
1. Her friends act odd and avoid interaction with you
A woman who is cheating may be using her friends as a "beard" and have them lie to you while they visit their secret lover
2. Different sex life
If things were going along normally and suddenly there is a change then it could be a sign of an affair. The specific change may vary. It may be an increased interest in sex or a decreased interest in sex.
3. She does not share her life with you
she becomes secretive in her life behavior and in her schedules. She could hide her whereabouts and start having a lot of business trips that care unexplained
4. Constantly on her phone
if she all of sudden keeps her cell phone on her at all times, or hides it, or becomes visibly nervous when you happen to touch it or be nearer to it than her, this likely means there is something there she doesn't want you to find out.
5. A sudden change in appearance.
If your girlfriend or wife starts to dress in a way that she never used to, or never used to apply makeup and from nowhere you see her doing so, there is something wrong.
6. Avoids some calls
She tends to avoid some calls more so when you are together, or if she picks it she pretends not to know the person calling.
7. She avoids some questions
If she avoids simple questions that you ask her, there are high chances that she is hiding some truth. Avoiding questions is an obvious indication that she is looking for a lie. The woman may also act defensively if you persist with the questions.