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Step 1
Follow your instincts. A woman's intuition can be trusted most of the time. If you have a gut feeling that your boyfriend is cheating, he probably is up to no good.
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Step 2
Look at the history on the computer and his cell phone. Check text messages and the call history if he hasn't erased it. If you get a bill for the cell phone, check the call list for phone numbers that stand out.
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Step 3
Notice if he has changed things about himself suddenly. If he starts dieting, working out, buying new clothes, styling his hair differently or wearing new cologne, he may be cheating.
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Step 4
Follow him after work if he tells you he has to work late. Make sure he doesn't see you or your car. Working late is a popular excuse for cheaters.
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Step 5
Hire a private investigator if you think he is cheating but can't catch him yourself. An investigator will follow him and get you proof if he is cheating.











