_ It's very unlikely that you can see it from your pants. If you suspect that the other party is cheating, don't ask questions first, and don't blindly look for any evidence. You should pay attention to her schedule. Generally speaking, in order to please other men, women will try to stay outside and buy some beautiful clothes and sexy underwear to dress themselves up.

If these requirements are met, you can collect her unwashed underwear or stockings and observe whether there are white or yellowish flake stains on these intimate clothes.

Make sure you haven't slept with her for more than 7 days, and use the micro-quasi-semen spot detection card to detect these stains to see if they contain semen spots. If they contain such male secretions, it can be judged that she has had sexual relations with people outside in recent days.