Quite often a man has no idea that his wife is cheating on him until he accidentally discovers some clue that something else is happening in the relationship. Usually though men do have some suspicions that the women are having affairs through their words and actions and then look for ways of how to catch a cheating wife. Some of the common signs that your wife many be cheating on you include:

- You find birth control pills and you have has a vasectomy

- You find that she has a different email address

- She spends more time shopping than she ever did but doesn't buy anything

- She has a different cell phone account

- You have unexplained numbers appearing on your home phone

- She suddenly starts dressing sexier

- She doesn't want to have too many conversations with you

- She makes excuses not to go out with you

- She stops wearing her wedding ring

In order to catch your wife cheating, you have to employ tactics used by private investigators. You could hire a private investigator to get the pictures of your wife with someone else or you can do some sleuthing on your own. You will undoubtedly start monitoring her activities and do some checking up on her. For example, if she tells you she is going shopping with a friend, you can come up with an excuse to call her friend house to find out if this is true. If she says she has to work late, and this is not a usual occurrence, you can call her place of work to see if she is really there. Keep in mind you will need a legitimate excuse for these calls because if your suspicions are unfounded, then the fact that you don't trust her could harm your marriage.

You can spy on her online activities with software that you install on your home computer. You have a password for the software and your wife will never even know that it has been installed. You will be able to find out what websites she visits and her email password so that you can check on her messages.

If you suspect that she is using the car to travel to hotels to meet with someone, you can take a check of the mileage on the car. Pay particular note to the credit card statement to see if she has been buying gifts for someone else. One telltale sign is if she comes home with a smell of aftershave on her clothing and it is not your scent.

If you have strong suspicions that your wife is cheating on you, then you should resort to following her when she goes out. This will lead you to the answers you seek, but you have to be subtle about it. If she catches on she may change her plans, but if she doesn't confront you about it, then you can feel reasonably sure that she is having an affair.