Is my wife cheating me?

[JP]

She is cheating on you, no doubt. You have several options like
1. shift your residence
2. live separately from your wife
3. try to act as if you have a new relationship

If she is serious about you, she will try to argue with you on the
3rd point.
It is difficult to get a divorce at this point as both of you are living
under one roof. To get a divorce one of you should be insane, or living
separately for a long period. When living together, refusing to engage
in sexual activity is also a reason for divorce.

You may better contact a good divorce lawyer in your area for further
details about divorce. But before everything, you should have a serious
discussion with your wife and warn her that you may move for a divorce
if she is not cooperating with you. Having affair with another man while being
married is another reason for divorce too. But for all these, you should have
solid proof.

Hope everything will be all right once you hold a serious discussion with her.