Oh, there's a new phenomenon now where in ADDITION to heavy makeup, many women (and a disturbingly growing number of men) use software to "enhance" (and often completely change) their appearance on dating sites or social media sites, euphemistically refering to them as filters.  So the original intent of filters was to remove things that were artifacts of the photo process, like weird-looking eyes, strange angles, poor lighting, etc.  But now the actually apply more and more AI to change one's appearance, often radically.

As Pax said, however, even that is not inherently sinful, but it depends upon the context and whether someone has a right to know the truth.

I one sense, all of us who haven't revealed our true identities here on CI are being "deceitful", no?

It's similar to lying, where it's not lying to withhold information or even to mislead someone who has no right to that information, as a right to know is required for any violation of justice.

So, some random person on the internet has no real right to know what you actually look like.

BUT if you're using the altered appearance to get the interest of a man who would not otherwise be interested based on your physical appearance, that entails a sinful deception for sure.

OR if you alter your appearance to such an extent as to invoke feelings of lust and impurity in others, potentially leading them into sin ... then that clearly entails a sinful deceptin due (once again) to the harm caused to others.

Pax explained it well that not everyone has the right to know everything about us, either physically or in any other way.

Yeah this is very common on social media, Instagram z tiktok, you name it. It's no wonder so many people are struggling with how they look.

Even guys that look like they have a 1% body in good lighting can look average in another angle with bad lighting, not even factoring steroid use and photoshop/AI/filters...

PAX, I agree. Others do not have the right to see everyone’s physical imperfections or see them in a manner they find embarrassing, uncomfortable, or just not at their best. This includes everyone from the woman with pale, thin lips who wears lipstick or gloss, the teen with acne who covers it with prescription lotion, the combat victim who hides his missing leg from knee on down beneath his pants and matching shoe, to the woman who wears a prosthetic breast because she’s had a mastectomy due to cancer. Nobody has the need or right to see the lady’s pale thin lips, the teen boy’s zits, the veteran’s stump, or the woman has only one breast!  
All of us present ourselves in different ways under different circuмstances without hypocrisy or dishonesty. When I go to Mass, I present myself differently than when I’m ready for bed, tent camping, cleaning out the garage, working as a cook at the luncheonette, or for an exam by the doctor!  Do my different attire, make-up, jewelry, hair style, or footwear make me immoral, sinful, under influence of the devil, or a liar?  Does anyone here think their priest climbs into bed fully clothed in his cassock, collar to black shoes? Does the bishop wear his mitre, cassock with red piping, pectoral cross, red zucchetto, and carry his crosier to wash his car? (“No,” according to Bp. Sanborn, “That’s why I have seminarians!”)

It’s time for me to go to bed. I’ve removed my lip gloss and light coverup (on my brown recluse bite and surgery scar) and replaced my church clothes with flannel banana pajamas and fuzzy purple socks. Shame on me for hiding my true face and comfortable garb from those at Mass!  

Good-night!
Sleep tight!
Don’t let the 
bedbugs bite!

This is just foolish to use AI or photoshop your dating picture online, make or female. It’s deception and the deceiver has most to lose. When that great guy you met online discovers you’re really 325 lbs, have brown teeth, lazy as a sloth, dress like a slob, have thin, greasy hair, bad breath and B.O. Plenty, he’s going to be disappointed. You set yourself up for rejection. 

And yet many of them do this, especially camera angles to look thinner.

That is usually the reason why these womens do it. To attract a man. They go from a 3 to a 6/7. It's a big jump and I would say very deceitful.

Going from a 3 to a 6 is just not possible.  Even if it were, it's not deceit, it's more like advertising.

Real-life dating, as Seraphina pointed out, you're going to find out in the first in-person meeting, that one is not who they claimed to be.  You weren't harmed long term, so I don't see how this is deceit in a grave way.  Is it low-level deceit?  Ok.

It seems to me you young guys are obsessed with the wrong things. No wonder nobody is getting married anymore- even in Tradition.

I'm not on any dating apps, but from what I've seen women do take deceptive pictures to make themselves look thinner..

As for the above, I think money is the biggest factor here, houses are very expensive and the job market not so great. I know guys older than myself who still can't afford a house despite going to University and having a career. 

A wife is a help mate. Why does a man need to have a house in place before finding a wife? If you live in a one bedroom apartment, that is enough to start a family.

There is a little 2 story cabin I drive pass sometimes. It is 200 square feet and it housed a family of 10 in like 1780.

Space and privacy. Also apartments can be very expensive where I live.

So .... are what we really are talking about are online dating apps?

Do you actually expect ANYONE to put up a bad picture of themselves with overhead fluorescent lighting and 3D zit exposure when they can put on glamour make-up and a filter?
If these are the pics of women you are looking at , get over yourself.
 Stop looking at these and meet some real females at church that are a spiritual 10, even with a little make-up. if your hormones are not revved up at first sight, that is a good thing, not a bad one. Get to know who these ladies are. You might actually prefer them in the long run.
It seems to me you young guys are obsessed with the wrong things. No wonder nobody is getting married anymore- even in Tradition.
If you are waiting for a natural "10" to show up at your door, take a look in the mirror first.
You seem to need a little bit of maturity and get the board out of your eye before you point out the (mascara-ed)eyelash in a young Catholic lady..

This thread makes me think of a song one of my siblings used to sing all the time.  I don't remember most of it the important part was:

"If you want to be happy for the rest of your life, never make a pretty woman your wife...If you see see things from my point of view you'll get an ugly woman to marry you."  

I think there were parts of the song in between how a woman who cares more for her looks than internal qualities will usually not make a good wife but live for her looks and cause a man a lot of trouble.  On the other hand a perhaps somewhat less beautiful woman in appearance often will expect less herself and be a better wife.

Prayers for all the young unmarried traditional men and women out there looking for spouses.