Uncover the Truth: Top Signs Your Partner Might Be Cheating on You

March 22, 2024 - Reading time: 15 minutes

Discovering unfaithfulness in a relationship is undoubtedly difficult, yet many contend it's better to be aware than to be left in the dark. Nowadays, with more avenues to connect with others and the benefits of technology, the likelihood of infidelity might seem higher.

This topic often emerges as a pressing concern from clients seeking guidance or assistance from private investigators. At Private Investigations UK, we offer a selection of services tailored for identifying cheating partners, aimed at bringing clarity and peace to those who suspect their significant other might be straying. Consulting with our expert investigators can help decide the best course of action to calm your worries.

Below, we share some potential red flags that could prompt you to investigate further.

Significant Indicators Your Partner May Be Cheating

1. Owning Dual Mobile Phones

A second phone can often be a red flag, complicating the tracking of calls or bills. If he's secretive about a second line or claims he doesn't have one, that's unsettling as it could facilitate concealment of communications.

A man wearing a white shirt using a smartphone

However, transparency about a second phone usually means there's nothing to worry about. It's the secrecy that's concerning, as it suggests he (or she!) might be using the additional phone for undisclosed reasons.

2. New Ringtone Or Message Alert Sounds

If your partner frequently changes their phone's ringtone or message sound, it might simply reflect a change of taste. However, if such changes coincide with other unusual actions like heightened secrecy, it could hint at an affair. It's essential to consider all possible reasons before deducing that cheating is afoot.

3. Changes In Regular Schedule

Consistent routines are the norm, so sudden, inexplicable changes like late work hours not tied to clear professional growth may point to infidelity.

If these late nights become a pattern without any new professional responsibilities to account for them, it could be a sign of a cheating spouse.

4. Irritation Or Anxiety When With You

Agitation or nervousness in your presence could imply guilt from an extramarital affair, but these emotions alone are not definite proof. Stress or other relationship issues could be the cause. When coupled with other indicators like communication breakdowns or less intimacy, they could suggest infidelity, warranting further investigation.

Sad man sitting on a sofa with a hand on his face

5. Phone Always On Silent

While silent mode on a phone doesn't directly imply cheating—there are valid situations for it, like meetings—persistent usage, especially alongside other peculiar behaviours like increased secrecy, may raise suspicions of an affair. A careful evaluation of all behaviours and circumstances is necessary before concluding infidelity.

6. Less Physical Affection (Or More Physical Affection)

Affection levels can taper off naturally over time within a relationship. However, a noticeable reduction in physical contact, if accompanied by secrecy or changes in behaviour, could signify that your partner is cheating.

Changes in affection can be normal over time, but when mixed with more questionable behaviour, it's possible infidelity has taken place.

In some cases a cheating partner may seek to compensate for their infidelity by being more physically intimate with their partner; this could be accompanied by different habits in the bed room which they have picked up from another partner.

Remember, each of these signs alone may not confirm infidelity, but when observed together or with additional questionable behaviour, they may warrant a closer look.

7. Heightened Focus on Personal Grooming

When a man or woman begins to take exceptional care of their appearance, this could be a signal of infidelity. After a deep commitment has been established, it's not uncommon to notice shifts in one's grooming habits. Conversely, those involved in extramarital affairs tend to obsess over their looks in an effort to appeal to their new interest.

Person in the shower

An increased investment of time in grooming activities or a new preoccupation with hygiene products may serve as a warning sign, suggesting that increased scrutiny of such behaviours is warranted.

8. Overreaction to Minor Issues

It's normal to feel frustrated when your partner becomes less affectionate, but it doesn't have to mean the relationship is over. During challenging times, individuals may prefer solitude.

However, it becomes a concern when trivial matters suddenly start to result in disproportionate criticisms. If your spouse is lashing out over chores like dishwashing or leaving a dish unwashed, or other trivial issues, these overreactions can be symptomatic of deeper issues, particularly if they used to be indifferent to such matters.

9. Frequent Nights Out Under the Guise of Friendships

It’s human to desire social connections and enjoy spending time with friends. However, when last-minute plans for a "quick drink" or "catch-up" become regular, along with late returns or excuses for overnight stays, it warrants attention.

Men have various reasons for socializing, but if you find yourself questioning their whereabouts often, it may be a sign of trouble. If they react with accusations of control instead of remorse upon returning, this behaviour could indicate possible infidelity.

10. Uncharacteristic Changes in Shower Routines

Humans are creatures of habit, tending to adhere to specific routines, especially concerning personal hygiene times.

A sudden and unexplained change in these routines, such as prolonged or late-night showers, can be indicative of deceitful behaviour. These unusual shifts in habits may point to infidelity.

11. Your Calls go Unanswered and Messages Ignored

If your partner begins to ignore your messages, or not answer the phone when you call, then you should question why that is. Perhaps they don't wish to speak with you in-front of another person, or to give away their own location through ambient noises.

A lady looking at her phone screen

12. Difficulty in Locating Your Partner

Struggling to locate an unfaithful partner can be distressing. Remember that there are multiple avenues to pursue in such situations. Start by gathering information on their possible whereabouts, including places of work, friends, family, and social media activity.

Engaging their social circle for information or even considering a private investigator are potential steps to determine their location. However, it's important to understand that even if you locate your spouse, it may not resolve underlying issues. In such difficult times, consulting a therapist or counselor could provide valuable guidance and support.

13. Altered Passwords and Device Access

If you previously had access to your partner's digital devices and suddenly find yourself locked out, it's time to seek an explanation for the sudden privacy increase.

If you also notice that your partner is spending significantly more time with a particular device, this could imply that they are concealing something, possibly an affair.

14. Cleared Text Message History

It's uncommon for people to habitually delete text messages unless device performance is at stake. If a person's text message folder is suddenly empty when you know they usually don't bother clearing it, this could be a sign of secretive behaviour.

15. They Start Using New Apps to Communicate

Most people tend to stick with their favourite apps for communicating with friends and family. If your partner has always used WhatsApp and Messenger to communicate, for example, then you should question whether there is a cause for concern should they start to use different applications.

Certain instant messengers can be used to send 'self deleting messages', or messages which can only be viewed once, which might help to conceal infidelity should you check their phone. Apps such as Snapchat, Signal, and Telegram, are popular for their privacy features.

16. Inaccessibility to Bank Statements

If you’re in a joint account arrangement and have always had visibility into account activity through statements, then their abrupt absence at home could signify potential troubles. It becomes particularly concerning if you used to regularly review these documents.

A finger pushing a button on an ATM machine

Nowadays, it's quite simple to switch off paper statements from your financial institution, but such a move can sometimes leave one partner uninformed and in the dark.

Pay close attention to details like where and when ATM withdrawals occur, as they might reveal discrepancies, especially if there’s no valid reason for the account holder to be at those locations at those times. Charges to their account for dating sites or adult apps might also be indicative of infidelity.

17. Mysterious Charges

Observing unfamiliar charges on your partner’s credit card should raise an immediate red flag. Investigate promptly.

Sudden bills emerging from unknown sources might suggest something isn’t right.

18. Geo-Tracking Features Disabled

In this technological age, the bulk of smartphones are equipped with tracking features, which are often enabled by default unless manually turned off.

Typically, men may be more proactive at disabling these services due to tech familiarity.

Considering that newer applications usually require this feature for optimal functionality, it’s a concerning sign if it’s intentionally disabled.

19. A Shift in Fashion Choices

If your partner, who usually favours casual wear, begins to don new or distinctly different attire, it’s worth paying attention.

Becoming excessively dressed up for nights out, mingling with new acquaintances, and returning late without prior notice might be problematic. Changes in their story as frequent as their wardrobe updates could indicate unseen alterations in their personal life, leaving you puzzled about your relationship dynamics.

Unfaithful partners often change their appearance to appeal to someone new.

20. Concealed Multimedia Files

Just as they might keep secret messages, your significant other may also be hiding audio or photo files. An individual adept with cutting-edge software and technology could be embedding images within other multimedia files, suggesting multiple layers of deception.

21. Alterations in Behaviour

Couples in long-term relationships develop patterns recognisable only to them. As a partner familiar with these routines, you’ll notice when there’s a subtle yet persistent change over weeks. This should alert you to the possibility of deeper issues.

One year calendar displayed on a phone screen

22. Cleared Trash Folder

When you suspect infidelity and decide to confront your partner, you might consider inspecting their email's trash folder for any non-permanently deleted correspondences with someone else. Additionally, checking their computer's recycle bin for odd photos can be revealing.

23. Their Phone is Now Locked

In many relationships, partners are privy to each other’s device passwords, often shared across multiple gadgets.

If you suddenly realise that your partner's phone password has changed and previously accessible items are now off-limits, there’s room to suspect. It may very well be a routine security measure of changing passwords often, but it could also suggest they're hiding something.

24. Unfamiliar Conduct Patterns

In a devoted partnership, couples often establish shared routines that may not stand out to others, but are integral to their relationship. As a partner, you're attuned to these patterns, so if there's an abrupt or gradual shift over a few weeks, take it as a potential red flag.

25. Elevated Call And Text Patterns

Phone bills can reveal much, especially if you have the means to check them. In the digital age, bills are often protected by passwords and hidden online.

An increase in the monthly phone bill points to more calls or messages—often an indication of someone engaging in a new romance.

If you're wondering why, hire a spy

If you suspect that your partner could be cheating on you, then we can help to check and gather evidence during our personal surveillance service.

Private investigator taking photos with a camera that has a long lens

During personal surveillance, our experienced detectives will monitor your partner and discreetly follow them whilst collecting photos/video as proof of their activities.

Our team cover all areas of the UK and beyond. We offer free, no pressure quotes for all work. If you would like to request a free quote then please get in touch with us, remembering to include the exact locations of the case (post codes) and any relevant details—we will do our best to offer the most effective and cost efficient solution in your case.

Related articles



UK private investigators

You are reading the PrivateInvestigators-UK blog — home to the UK's leading detective agency. Learn more about us by visiting our homepage PrivateInvestigators-UK.com.