Do you have trust issues in your relationship? Do you think your partner may be cheating? Identifying the signs that he is in a relationship with someone else may help. The following signs indicate that your boyfriend might be involved with another girl. This ultimate guide lists 17 subtle and not-so-subtle signs that your partner is cheating. Once you identify these signs, you can confidently decide what you should do and how to keep yourself emotionally safe.

Why Do Guys Cheat: Uncovering the Cause of Infidelity
Before entering the signs, let’s explore why someone might cheat. Unfaithfulness can result from feeling emotionally unsatisfied, abandoned, inadequate, or as a method of not having to deal with problems in your current relationship. For instance, a partner who feels unappreciated might look beyond the relationship for validation. These reasons are not to excuse the behaviour but to give you a reason to feel good about stretching and responding when deciding how to move forward and make something out of this situation. The “why” can also be used to help direct conversations you have with your partner about the underlying reasons.
17 Signs He Is in a Relationship with Someone Else
Let’s say you suspect your man is involved with another woman. If unsure, you may want to pay attention to these 17 signs of cheating. By identifying changes in behaviour (secrecy, emotional distance, unexplained absences), you will resolve your concerns and protect your relationship.
1. He’s Mysterious With His Phone
If your man suddenly needs to guard his phone, change his password, or tilt the screen away while you are around, it could be a red flag. Sarah from New York wrote, “My boyfriend used to leave his phone on the table at dinner, but now he takes it with him to the bathroom.” That secrecy could indicate he’s hiding conversations with somebody else. Of course, privacy is normal, but a marked change in phone habits is something to keep an eye on.
2. He’s Always Busy
And a partner who’s “always working” — especially if they’re not being transparent about spending that time working — may be investing that time in another person. If he’s working late regularly or has a suddenly full calendar that doesn’t include you, it’s a red flag. Olivia observed this with his boyfriend: “He began working late and I offered to bring dinner, but he freaked and said it was a bad idea.” Inexplicable busyness is naturally suspect.
3. He’s Less Interested in You
Suppose your spouse is retreating or less involved (emotionally or in discussion) in conversations and activities with you. In that case, he may be focusing his emotional energy elsewhere. For instance, he may no longer ask about your day or seem distracted when you are together. This change can make it feel like he’s slowly pulling away from the relationship; he is placing his emotional energy elsewhere.
4. He Suddenly Becomes More Conscious of His Looks
A newfound interest in his appearance, such as buying new clothes, getting more haircuts, or going to the gym, may mean he is trying to impress somebody else. “My husband, who never had any interest in clothes, started buying designer shirts and working out every day,” Emma said. Self-improvement is all good, but when other signals accompany it, it could indicate infidelity.
5. He’s Emotionally Distant
Emotional connection is the glue of a relationship. If your partner becomes less affectionate, doesn’t engage in deep conversations, and is apathetic about your feelings, it may be a sign that his emotional interest is elsewhere. This space can be a brick wall between you, making it difficult to connect on a deeper level.
6. He’s Not Interested Or Little Interested In S3x
A decrease in physical closeness — it may be as simple as fewer hugs, kisses, or cuddles or as dramatic as a lack of regular s3x — can indicate infidelity. Suppose he has reasons to avoid intimacy or become less amorous. In that case, he may be having his needs met elsewhere. This shift can be especially painful because physical closeness often reflects emotional connection.
7. He’s Protective of His Social Media
In today’s digital world, social media can tell us a lot. He stops posting about you or interacting more with people he doesn’t know. It may seem odd, but if your partner starts shutting you out and flirting online with strangers, he may be up to something. Lisa said, “My boyfriend stopped liking my posts and was commenting on some girls I didn’t even follow.” This behaviour may indicate he’s keeping his online existence separate from your relationship.
8. He’s Unusually Generous with Gifts
Spontaneous generosity, such as showering you with presents or excessive attention, can sometimes alleviate guilt. If your S.O. suddenly starts showering you with gifts for no reason, it could be a sign that they feel guilty about being unfaithful.
9. He’s Concerned With What the Ex’s Are Doing.
If your partner starts randomly talking about an ex or begins reconnecting with them, he may have turned to an old relationship to either rehash feelings or pursue a new one. This behaviour can feel like a betrayal, especially if he is covert about these interactions.
10. Friends Hint at Problems
When friends or acquaintances inquire, “Are you two still together?” or look taken aback to see you, it may indicate that they’ve been hearing rumours about it from your partner. These subtle cues can suggest that others have observed that something is off.
11. He Pursues Other Hobbies or Interests
Taking up new hobbies is normal—he may have a new side project that consumes most of his free time (although not literally) or get back into golfing. So if he suddenly starts attending art classes every Monday evening and never, not once, invites you along, it might be worth asking why.
12. He Gets Defensive
If asking, say, a simple question about your partner’s day or current whereabouts sends him into a defensive or angry tailspin, maybe, just maybe, he is hiding something. Underneath defensiveness, there is usually guilt or fear of being found out.
13. His Stories Don’t Add Up
Inconsistent explanations, such as changing the particulars of where he was or who he was with, can be a hallmark of deception. If you hear inconsistencies in his stories, it may be because he’s lying to cover up time spent with someone else.
14. He Communicates Less
Fewer calls, texts, or check-ins can be a sign that your partner is distracted. If he used to freely text you all day but now replies only occasionally, he may be ignoring someone else.
15. He Has Mood Swings
Unexplained mood swings—for example, being incredibly sweet one day and irritable the next—can be a manifestation of the stress of keeping a forbidden relationship, says Clarke. Those swings can make the relationship feel unstable.
16. He Ceases Planning for the Future
If your partner is reluctant to discuss plans for the future—say, one night, you mention that you’d like to plan a trip for a few months from now, and he immediately shuts the conversation down—that might be code red. He might not be committed to the relationship or to you. This move could indicate that he is building a future with someone else.
17. Your Gut Feels Like Something’s Off
Occasionally, your instinct notices something subtle before your mind does. Don’t suppress it if you persistently sense something’s a little off. Sometimes, your gut serves as your best defence in identifying infidelity.
What to Do When You Spot Signs He Is In A Relationship With Someone Else?
If you see a few of these signs, it’s time to intervene. Here are a few options to consider:
Be Honest: Address the issue openly and have an objective conversation. Say something like, “I have observed some changes and am concerned. Can we talk?” Don’t fight and accuse each other for nothing.
Trust Your Instincts: If you feel something is wrong, dig deeper, but with respect.
Get Support: Share your thoughts and feelings with friends, family members, or a counsellor who can provide perspective and emotional support.
Get Professional Help: Couples counselling can help work through the issues and regain trust if you both desire.
How to Cope with Infidelity?
Finding out someone is cheating on you is so sad. Let yourself feel all the emotions — anger, sadness, betrayal. For now, lean on friends or family who are supportive, and consider seeing a therapist to help you during this time. It’s a process to heal, and it’s O.K. to take as long as you need. Websites such as MomJunction provide more coping mechanisms.
Conclusion
Knowing the signs he is in a relationship with someone else can be devastating, and the earlier you face that, the better for you. If you see several of these signs, talk candidly with your partner. Follow your gut and don’t be afraid to lean on a family member, friend, or professional. Your well-being also takes priority, and making active choices will see you through this tough time. For more, check out Hack Spirit or Bolde.
FAQs
What are the most common signs that he is seeing someone else?
The top warning signs are secretiveness with phones, sudden busyness, emotional and physical distance, changes in appearance and defensive social media activity.
How can I confront my partner without causing a fight?
Could these signs be my imagination?
Behaviour can be misread, particularly if a person only exhibits a sign or two. Nonetheless, several consistent indicators do deserve notice. Don't Know? Trust Your Instincts and Test It!
What should I do if I confirm he’s seeing someone else?
Process your emotions, find support from loved ones, and make decisions about how to proceed—whether that means working on your relationship or ending it. Choosing male or female counsellors can be beneficial.
Can a relationship survive infidelity?
Yes, but it takes both partners to want it. Transparency, open communication, and often therapy are essential to rebuilding trust.
How can I rebuild trust after infidelity?
Rebuilding trust takes time. It requires both partners to be honest and open with each other and, perhaps, see a professional to explore any underlying issues.
Are there ways to prevent infidelity?
Keeping the lines of communication open, finding ways to spend quality time together and tackling problems early can help strengthen your relationship and decrease the likelihood of cheating.
How important is intuition in detecting infidelity?
Intuition can be invaluable, as it tends to notice subtle signs. If something feels off to you, it's worth looking into, but try to balance it with evidence.
How do I differentiate normal relationship changes from cheating?
Typical changes are slow and tend to correspond to life events, such as stress at work. Traditional cheating red flags include loss of secrecy, defensiveness, and inconsistency.
Should I check his phone or social media to confirm suspicions?
Checking a partner’s phone can damage trust and escalate conflicts. It’s better to have an open conversation first. If you choose to check, be prepared for the consequences.
References:
- 17 Signs He Is Seeing Someone Else – StyleCraze
- 25 Signs He Is Seeing Someone Else – Marriage.com
- Top 15 Sneaky Signs He Is Seeing Someone Else – Pinkvilla
- 21 Subtle Signs He Is Seeing Someone Else – MomJunction
- 16 Subtle Signs He Is Talking to Someone Else – LoveStrategies
- Top 10 Signs Someone Else Is in Your Relationship – Keen
- If You Notice Any Of These Signs, He Might Be Seeing Someone Else – Bold
- 17 Unfortunate Signs He Is Secretly Seeing Someone Else – Hack Spirit
- 11 Undeniable Signs Your Ex Misses You (And What to Do About It) - May 5, 2025
- The Silent Betrayal: How to Spot Signs He Is In A Relationship With Someone Else - May 3, 2025
- Things You Should Never Say to Your Spouse - April 30, 2025