However, these expressions should only be for reference, not evidence affirming an affair.
Husband suddenly sets new password
The most obvious sign is abnormal changes in the way your husband uses his phone and personal devices.
If previously the husband was comfortable keeping the phone in the house, now he has a new password, often turns the screen upside down or carries the phone with him all the time.
That could be a noteworthy sign. Some people even use highly secure applications or turn on the self-deleting message feature to limit saving chat history.

Erase family presence on personal page
Some people tend to reduce their family presence on social media by replacing group avatars with personal photos, landscape photos, or vehicles. Information about marital status can be hidden or removed by their husbands.
At the same time, they also limit interaction with their wife's posts and sometimes refuse to display tagged content related to family.
Strange interactions of family time zone difference
Social networks often leave many traces through daily activities. Frequently releasing special emotions, commenting intimately with a specific account, or texting late at night can make your partner feel insecure.
Use a secret account to hide
To avoid being detected by acquaintances, some people choose to use sub-accounts or anonymous accounts.
These accounts usually do not use real names, have few friends and mainly serve texting, tracking or interacting with a certain object without wanting others to know about it.
Expert advice to protect marriage
According to family psychologists, social media is not a direct cause of adultery but only a tool to reflect gaps in relationships.
Therefore, a few changes on social networks are not enough to conclude about a person. In many cases, changing passwords or restricting the sharing of personal information only stems from security or privacy needs.
When feeling doubtful, the wife should remain calm, observe objectively and choose the right time to talk frankly with her husband. Instead of accusing, share your feelings about the distance or changes in the relationship.
Experts also recommend not publicly criticizing or "exposing" on social networks, because that often makes conflicts more serious. In the technology age, maintaining family happiness requires trust, communication and alertness from both sides.