How can I find out if my mom is cheating on her husband?

She is bipolar and mentally ill! She has been caught cheating on the last husbands, what can I do to find out for sure!?How can I find out if my mom is cheating on her husband?
Isn't this her and hubby's problem? What do you have to do with it? live your life and let your mom live hers, cheating or not.How can I find out if my mom is cheating on her husband?
Does she use the computer? Put a key logger on her machine and see who she is emailing.
Mind your own business.
Mind your own business
Mind your own business. What good what it do you to find this out???
catch a cheater
ask her. Why do you want to know?

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