Clothing—especially underwear—can carry clues that something’s off. Since it’s such an intimate item, any unusual change can feel particularly telling. Maybe your partner starts wearing a different style or brand of underwear than they used to, or they suddenly seem more concerned with how they look underneath their clothes. If this shift isn’t accompanied by a conversation about lifestyle changes—like working out or updating their wardrobe—it could raise a quiet but important question: why now?

So, what should you actually be looking out for?

1. Unusual Stains or Marks
If you notice stains, discoloration, or even makeup smudges that don’t belong to you, it’s worth paying attention. While there could be innocent explanations, repeated or unexplained incidents can point to something more serious. This is especially true if your partner becomes defensive or evasive when you bring it up.

2. Scent and Appearance
A noticeable scent—like unfamiliar perfume or cologne—or freshly laundered underwear that seems oddly out of place can also be suspicious. Changes in how they care for or present their undergarments might indicate they’re trying to impress someone new.

Of course, none of these signs are proof by themselves—but when they start to add up, trust your intuition. Small details can reveal big truths.