How do you know she's cheating? We asked a few experts about what subtle signs to watch for. How To Tell She's About To · Dealing With A Suspicious. how do you know if they are cheating? is he cheating? signs of cheating. If he or she is sleeping with you while secretly pursuing another relationship. You are not the jealous type, but do you ever feel like your girl is cheating or up to something? Use these signs to determine whether her eye is wandering. Relationship experts reveal the telltale signs your girlfriend is being unfaithful. In the study, 19% of women admitted to cheating compared to research. If a woman is going to cheat, there are surprisingly specific times when she's likely to do it. Pay attention to these 6 signs she's thinking of cheating and you can. 25 Clear Signs That Your Girlfriend Is Cheating On You If you're a couple who have always used “we”, though, and she's now starting to say.