When a guy is truly into you, his attention, energy, and affection are focused on you.
But if you’ve started noticing subtle (or not-so-subtle) changes in his behavior, you might have a gut feeling that something is off.
Maybe he’s suddenly more secretive with his phone, emotionally distant, or just not as present as he used to be.
The truth is, when a man is talking to another girl—whether it’s innocent or something more—there are always signs.
And while not every shift in behavior means he’s being unfaithful, it’s important to recognize when something doesn’t feel right.
If you’re wondering whether there’s someone else in the picture, here are seven clear signs that he might be talking to another girl.
These 7 Signs Prove He’s Talking to Another Girl
1. He’s More Protective of His Phone
A man who has nothing to hide won’t act like his phone contains government secrets.
If he used to leave it lying around but now keeps it glued to his hand, takes it with him everywhere (even to the bathroom), or suddenly puts it on silent mode all the time, it’s worth questioning.
These subtle actions suggest he doesn’t want you to see who he’s talking to.
If he has also changed his passcode or refuses to let you use his phone—even for something harmless like checking the weather—it’s likely because there’s something (or someone) he doesn’t want you to find.
Watch out for behaviors like stepping out of the room to take calls or suddenly being too private about his notifications.
If he used to text openly but now keeps his screen out of sight, he may be keeping a conversation under wraps.
2. He’s Less Engaged in Conversations With You
Remember when he used to genuinely listen to you?
When he’d ask about your day, remember little details, and actually care about what you had to say?
If that’s changed and now his responses are short, distracted, or seem forced, his attention may be elsewhere.
A man who is mentally invested in someone else won’t have the same emotional energy for you.
You might notice him zoning out when you talk, looking at his phone mid-conversation.
He might start responding with generic phrases like, “Oh, really?” or “That’s crazy,” instead of actually engaging.
It’s almost like his mind is somewhere else—because it probably is.
If he used to be talkative and now seems distant or uninterested, it’s a sign he may be having deeper conversations with someone else.
Emotional detachment often happens when a man starts building a bond outside the relationship.
3. He’s Suddenly Busy All the Time
Out of nowhere, he’s got more “late nights at work,” more “plans with the guys,” or random obligations that seem to pop up without warning.
If his schedule has become packed but he’s being vague about the details, he could be making time for someone else.
One of the biggest red flags is inconsistency.
If he says he’s going to bed early but then is online for hours, or if he claims to be somewhere but you later find out that wasn’t true, something isn’t adding up.
Lies and half-truths usually come with a trail of contradictions, and a guy who’s trying to juggle two women will eventually slip up.
Another sign?
His availability toward you has changed.
Maybe he used to make time for date nights, long calls, or weekend plans, but now he’s always “too busy” or “too tired.”
If he suddenly doesn’t have time for you, it’s worth asking yourself—who is he making time for?
4. He’s Less Affectionate or Intimate
When a guy is emotionally or physically involved with someone else, his behavior toward you is bound to change.
Maybe he’s not as affectionate as he used to be—fewer random hugs, less hand-holding, or no more playful teasing.
If his sweet little gestures have faded, it could be because he’s reserving that energy for someone else.
Has the intimacy between you two changed?
If he’s suddenly less interested in physical closeness—whether that’s kissing, cuddling, or even being intimate—it’s a red flag.
Men naturally pull away when they’re connecting with someone else, whether emotionally or physically.
Another clue?
The compliments stop.
If he used to hype you up, call you beautiful, or make you feel special but now barely acknowledges you, it might be because he’s showering someone else with that attention instead.
Pay attention to the shift.
If he’s no longer making an effort to connect with you on an emotional or physical level, it’s time to question why.
5. He Starts Comparing You to Someone Else
When a guy keeps bringing up another woman—especially in a way that makes you feel like you’re being measured against her—it’s a major red flag.
It might start subtly, like casual mentions of a coworker, a mutual friend, or even an ex.
Maybe he praises her sense of humor, the way she understands him, or even how she handles certain situations.
If you hear things like, “She’s really funny,” or “She just gets me,” it’s not just harmless talk—it’s a glimpse into who’s on his mind.
It becomes even more concerning if he starts pointing out your supposed flaws in comparison.
Comments like, “She’s so adventurous, you should be more like that,” or “She always has the best advice,” can make you feel like you’re in competition for his attention.
If this type of talk happens often, it could mean his feelings are shifting toward her.
The more he focuses on what she has that you supposedly don’t, the more it indicates that she’s occupying a space in his thoughts that should be reserved for you.
6. He’s More Defensive Than Usual
A man with nothing to hide won’t act guilty when asked simple questions.
If you casually ask, “What have you been up to?” or “Who were you texting?” and he immediately gets irritated, overly defensive, or flips the conversation back on you, that’s a red flag.
Does he suddenly accuse you of being “paranoid” or “too jealous” when all you did was ask a harmless question?
That’s called deflection. Instead of answering honestly, he makes you feel like the problem to avoid facing the truth.
Other defensive behaviors to watch for.
He gives vague or inconsistent answers when explaining his whereabouts.
He avoids eye contact or looks nervous when you ask about certain people.
He gets annoyed at you for checking his social media or asking about a new female friend.
When a guy starts acting defensive out of nowhere, it’s often because he knows he’s doing something he shouldn’t be.
A man who is faithful will have no problem being transparent.
7. Your Gut Tells You Something Is Off
Sometimes, the biggest sign isn’t something you can logically prove—it’s something you feel.
Women have strong intuition, and if something feels off, there’s usually a reason for it.
Maybe he’s still doing all the right things on the surface, but his energy toward you has changed.
The sweet texts have slowed down. The way he used to light up when he saw you doesn’t feel the same.
The little things he used to do—random compliments, checking in on you, planning quality time—have faded without explanation.
It might not be one huge thing but a collection of small, almost unnoticeable changes.
His mood around you is different, or there’s a sense of emotional distance you can’t shake.
If you’ve been feeling this way for a while, don’t ignore it.
More often than not, your gut feeling is right.
Final Thoughts
If you recognize multiple signs on this list, it’s time to have an honest conversation.
While some changes in behavior might have innocent explanations, if he’s acting shady, distant, or defensive, he might be talking to someone else.
The most important thing is to trust yourself and never settle for anything less than honesty and respect.