If you’ve got that sinking feeling in your gut…. the one you can’t quite explain but just won’t go away… you’re not alone. It’s incredibly common to suspect something’s off, then talk yourself out of it because facing the truth feels unbearable.
This list isn’t about jumping to conclusions. It’s about paying attention. Often, it’s not one thing – it’s the shift in how they treat you, how they act, and how you feel around them.
12 Signs your partner could be having an affair
Here are 12 common signs that could indicate your partner is having an affair. Just because you may have noticed one of the things – don’t jump to any conclusions. Notice the changes, listen to your instincts, and if something doesn’t feel right, don’t ignore it.
1. They’re taking more interest in their appearance
Have you noticed your partner suddenly taking more interest in their clothes and how they’re dressing – whereas previously they barely looked in the mirror? Maybe they’ve splashed out and bought new clothes which are different to their normal style. They’re taking a lot more care about how they dress and taking longer to get ready. It could be that they’re trying to impress someone.
2. They’re exercising more
Is your partner taking more interest in their body and how it looks? Have they just joined a gym for the first time, are they exercising more than usual, or have they hired a personal trainer? Are they concerned about their weight and more careful about their diet and what they eat – whereas previously they wouldn’t give it a second thought?
3. They’re more secretive
Maybe they’re permanently attached to their phone and have changed the passcode. Do they take it everywhere with them and is this a change in their behaviour? Are they taking calls at odd times of the day and stepping outside to speak? Maybe they’ve changed the password on their computer. Do you feel like they’re trying to hide something from you?
4. They’re defensive
Have you noticed that they’re defensive when you ask them seemingly innocent questions like – what they’ve been up to or where they’ve been? Their reaction seems a bit extreme given what you’ve asked them.
5. They’re working longer hours and staying away more
But that doesn’t correspond with a change in their job such as a promotion. It feels like they don’t want to spend any time at home, and when they are away, you don’t hear from them or you can’t get in touch with them.
6. They’ve withdrawn from you
Maybe they’ve stopped asking you how your day was or what you’ve been up to and show no interest in your life. There’s little conversation between you anymore and the banter between you has gone. They don’t tell you they love you anymore.
7. They’re taking more cash out than normal
Cash outgoings have increased and they haven’t got a plausible explanation for it. A change in their spending habits could be a sign of going for more meals out or paying for hotels with cash.
8. There’s a change to your sex life
You previously had an active sex life that’s dwindled lately, or your partner is showing no interest in you sexually and making excuses. Or it could also be that your partner suddenly wants to have more sex and has become more adventurous.
9. You’ve caught them out in a lie
Explanations they’ve given you for various things don’t ring true or stack up. You’ve caught them lying about something and then they’ve become defensive or angry when you’ve brought it up (because they’ve been caught out). Often when people are telling lies, they will elaborate the story and give a lot more detail than is necessary to try and make them believable.
10. They’ve started doing more things on their own
Perhaps there were things you used to do together that your partner prefers to do on their own now. Eg you may have gone to the gym together previously or maybe they start going out with their friends more instead of arranging things as a couple.
11. They’re critical of you
It could be that they have started criticising you and finding fault with you over things that wouldn’t have bothered them before. Are they picking arguments with you and generally being irritable with you? This could be an indication that they’re trying to justify to themselves why they’re having an affair.
12. Your intuition is telling you that they are having an affair
This is possibly the strongest clue. Our gut instinct is often correct. It may not even be anything obvious, but you just notice subtle changes in behaviour or there’s something you can’t quite put your finger on.
To summarise
No one wants to believe their partner is cheating. But if something feels off, it’s important to take your own instincts seriously. You don’t need hard proof to start questioning what’s going on – and you and you don’t need to stay stuck in confusion or denial.
If the signs are stacking up and you’re feeling confused, trust what you’re seeing. You deserve honesty, respect, and emotional safety in your relationship.
Start by having a calm, direct conversation. Share what you’ve noticed and how it’s making you feel — then pay attention to how they respond. The truth might be painful, but facing it puts you back in control.
And if you do find yourself facing the reality of infidelity… and the relationship is over… don’t go through it alone. Surround yourself with people who care about you, and know that there is a way through this – even if you can’t see it yet.
Download my free guide: ‘ 10 Simple secrets to let go of heartbreak and start moving on with your life. It will help you clear your head, rebuild your self-worth, and take the first steps toward emotional healing.
👉 Get the guide here
And if you need more personalised support to get through this then book your free clarity call and we’ll explore where you are now and what support would help you move forward.
