Your spouse may start working late more often, going out with friends more often, or being more secretive with their phone.
You may feel less connected to your spouse, less respected, or less included in their life. You may also notice a decrease in sex or intimacy.
Your spouse may start using cash more often, have unexplained charges on their credit card, or be reluctant to make big purchases together.
Your spouse may start spending more time with new friends or colleagues, and you may not be invited to join them.
Your spouse may start lying to you about their whereabouts, what they're doing, or who they're with.
If you confront your spouse about your suspicions, they may become defensive or angry.
If you suspect that your spouse is having an affair, it's important to talk to them about it. If they are willing to work on the relationship, there is a chance for reconciliation.