Changes in Appearance

If someone begins to take more care of their appearance without an apparent reason, it could be a hint of other romantic interests. More frequent visits to the hairdresser and shopping for the latest fashion clothes are behaviors to watch out for.
4°
Excessive Phone Use

A sudden or increasing use of the phone in a secretive manner could indicate communications they don't want you to know about. If your partner adds security passwords to their device, it could be a signal.
3°
Unusual Money Movements

If your partner becomes mysterious or evasive about bank transactions or you notice many unusual purchases, it's best to investigate!
2°
New Work Commitments

Claims of sudden or prolonged work commitments that didn't occur before can be a cover.
1°
Changes in the Bedroom

Changes in the intimate area can be a sign of a deeper problem.