Is He Lying About The Basics?
81% of dating profiles contain inaccurate information about height, weight, or age. Here's what the research says about profile lies and how to vet before you invest.
The Red Flag is a term coined by Overstand Dating.
You matched. You texted. You liked each other enough to plan a date. And then you showed up.
He said he was 5'11". He is not 5'11". He said he was 38. Something about his face says otherwise. He listed himself as single, but there's a tan line where a ring used to be and he checks his phone like someone who has somewhere to be by 9pm.
None of these are small things. They are the basics. And if someone is willing to lie about the basics before you've even met, that tells you something important about what they'll do once they think you're invested.
This post breaks down why lying about age, height, and relationship status on dating apps is so common, what the research actually shows, and how to vet before you get attached.
How Common Is This, Really?
More common than most people want to admit.
A study published in the Proceedings of the CHI Conference on Human Factors in Computing Systems, one of the most cited pieces of research on online dating deception, measured the actual height, weight, and age of 80 online daters and compared those numbers to what they listed in their profiles. The results were consistent: most people misrepresented at least one of those three things. Men skewed their height upward on average by about half an inch, which sounds minor until you're standing in front of someone who claimed 6'1" and is looking up at you.
A PMC review of dating platform data found that 81% of profiles contain inaccurate information about height, weight, or age. Not a fringe behavior. A majority behavior.
The lying is not random. It is strategic.
Why They Lie About Height
Height is the most talked-about lie on dating apps, and there's a clear reason it happens so often.
Research consistently shows that taller men receive more matches on dating apps. The pressure to meet an arbitrary threshold, usually 6 feet, pushes men who are 5'9" or 5'10" to round up, sometimes aggressively. Some list themselves as 6'0" when they are 5'8". The logic is: get the match first, worry about the reality later.
The problem with that logic is that it starts the interaction with a deception. And deception about something verifiable on a first date is not a promising opener.
What makes height lying particularly common is that many men have genuinely convinced themselves it is not a real lie. It is "rounding up." It is "close enough." It is "not that important." But when you show up to a date and the person is four inches shorter than advertised, it is not rounding. It is a mismatch between what was promised and what was delivered. And it signals that they are willing to misrepresent themselves to get a foot in the door.
Why They Lie About Age
Age lying runs in both directions, but for different reasons.
Men in their 40s and 50s often list themselves as younger to appear in search results for women who have filtered for a lower age range. It is a visibility hack. If a woman's filter tops out at 45 and he is 49, he lists himself as 44 and shows up in her results.
The research on this is consistent. The CHI study found that men were more likely to misrepresent age downward to appear younger and increase match volume. The misrepresentation was rarely dramatic, usually two to four years, which is small enough to feel deniable but large enough to be deliberate.
The justification is usually some version of "I look younger than my age" or "age is just a number." Neither of those is a good reason to falsify a data point that someone used to make a decision about whether to swipe.
There's also the question of what else gets misrepresented when age does. Age is the easiest basic fact to verify. If someone is willing to lie about the one thing you can confirm with a quick Google search, it is worth asking what they've said about the things that are harder to check.
Why They Lie About Relationship Status
This one is different from height and age. Height and age are insecurities dressed up as optimism. Lying about relationship status is something else entirely.
A man who lists himself as single on a dating app while being married or in a committed relationship is not rounding up. He is actively concealing information that would disqualify him from the conversation entirely. He knows this. That is why he hides it.
The signs are often there early. Unusual availability windows. He can only meet on certain days. He is never available on weekends, or never available on weekdays. He doesn't mention much about his living situation. He does not suggest coming to his place. He checks his phone with a specific kind of attention, not casual scrolling, but management.
The tan line is real. So is the ring that disappears when he goes out. So is the way some men will tell you they are "separated" or "basically divorced" or "it's complicated" when what they mean is: I am still with someone and I am hoping you will decide that's not a dealbreaker once you like me enough.
It is not a gray area. It is a lie about something that gives you the right to opt out, and withholding it removes that choice from you.
The "Verification Anxiety" Problem
Here's the thing that doesn't get talked about enough: many people know something feels off but don't trust themselves enough to act on it.
This is sometimes called verification anxiety. The discomfort of wanting to confirm facts about someone you're dating, wondering if it makes you paranoid or controlling, deciding it's better to just wait and see.
It is not paranoid to want to know if the person you're considering spending time on is who they say they are. That is basic due diligence. The reason it feels uncomfortable is that dating culture has trained people, particularly women, to be easygoing and low-maintenance about early red flags. To not come across as suspicious or high-maintenance. To give the benefit of the doubt.
But the benefit of the doubt costs something. It costs time. It costs emotional investment made on the basis of inaccurate information. It costs the discovery, three dates in, that the version of this person you decided you liked was partly constructed.
You are not obligated to give someone the benefit of the doubt about their name, their height, their age, or their relationship status. Those are facts. You are allowed to want them to be accurate.
What You Can Actually Verify Before a First Date
You don't have to go into every date operating on blind faith. There are practical things you can do without being invasive.
Reverse image search their photos. Drag their profile picture into Google Images or use a tool like TinEye. If the photos are stolen from someone else's social media, this will usually surface it. It also tells you whether the person in the photos has a public presence that matches what they told you.
Search their name plus city. A first name and a city is not much to go on, but a full name, which you should have before a first date, is. A quick search often surfaces LinkedIn, Facebook, or news mentions that either confirm or complicate what they've shared.
Check their social media consistency. If they have Instagram or Facebook, does the person in those photos look like the person in the dating profile? Does the age match? Do they post things that suggest a current relationship, a family they haven't mentioned, a lifestyle that doesn't match what they described?
Use ProfileFlags before you invest. A profile scan at ProfileFlags can surface patterns in how someone presents themselves on a dating profile before you've spent time, energy, or hope on them. It's designed to catch things that are easy to rationalize away when you're already interested. One scan. $19.99. Worth doing before a first date rather than after a third one.
What to Do When You Catch a Discrepancy on the Date
You show up. Something doesn't match. Now what?
The cleanest approach is direct and low-drama. "Your profile said 6'1" but I think we might be the same height. What's going on with that?" Said lightly, without accusation, it tells him that you noticed and you're not going to pretend you didn't.
How he responds tells you almost everything. Someone who laughs it off, acknowledges it, and moves on is different from someone who gets defensive, dismissive, or pivots to making you feel like you're being unreasonable for noticing. The defensiveness is the real data point.
The same applies to age and relationship status. A casual, direct question early, asked without drama, separates the people who are slightly embarrassed about a minor exaggeration from the ones who have something serious to hide.
The Mixed Signals in Dating post covers what to watch for when early behavior starts to feel inconsistent, which is useful reading if you're already getting a sense that something is off before the first date even happens.
The Bigger Pattern
When someone lies about the basics, it usually means they have decided that getting your attention matters more than being honest about who they are. That is a values decision. It is not a nervous moment or a fluke. It is a choice made before they met you.
People who are comfortable in who they are tend to list accurate information and let the match happen or not based on reality. People who believe they need to manage your perception from the first screen are telling you something about how they plan to operate going forward.
A small lie about height is not necessarily the end of the world. But it is an early window into how someone handles the gap between who they are and who they want you to think they are. Pay attention to that gap. It tends to widen.
Scan Before You Invest
The best time to catch a misrepresented profile is before you've built feelings around it. ProfileFlags scans a dating profile and flags patterns that are worth looking at twice. It doesn't replace your own judgment, but it gives you a second set of eyes before you decide whether to invest your time.
One scan. $19.99. No subscription. You've spent more than that on dates that were a waste from the first five minutes.
This post is for general information about dating patterns and does not constitute legal or professional advice.