I am not sure the issue of "right" is accurate or matters.  

What I mean is this: IF I am in an increasingly-serious relationship, I can choose to ask or not ask about such things.  Likewise, IF asked about such matters, I am free to answer or not answer fully and truthfully.

Saying one has a "right" to something indicates an obligation on the part of another.  I don't think anyone is OBLIGATED to divulge information regardless of desire (or lack thereof) to know said information.

If someone wants to know very personal information about me, once asked it is my choice to share it.  Likewise, those with whom I share said information must decide how to process it and whether or not it affects our interaction moving forward.

Oh, and if I were a young lady, I would definitely do my DUE DILIGENCE and look into the man's past. Look him up on social media, pose as a high school friend and see what you can find out, etc. I'd probably pay the $30 or $60 fee to do a background check. Or a few hundred dollars for a private investigator. Think that's excessive? You can't be too careful these days. We're talking about avoiding a life of misery, loneliness (divorced but can't remarry), poverty, strife, etc.  I think a few hundred dollars would be well spent to avoid that! Oh, and as a bonus (since you never married "the wrong guy"), you might also GET a nice Catholic man, loving family, beautiful Catholic household, many beautiful well-raised Catholic children, grandchildren, etc. as a bonus! A few hundred dollars sounds like a bargain now...

Very good advice. People may have one "face" to their relatives and co-workers but have freely photograph themselves living a wild private life. A five or ten minute social media search could save years of misery.

Certainly!  Every sordid (if that’s the correct word) detail need not be revealed if a person lived a sinful life and has sincerely repented and amended.  But a potential mate has a right to know if there are physical or health issues, if there are legal or financial issues, and most importantly, if the marriage he is entering is valid!   A relative of mine could have been preserved from a world of hurt had she done some rather simple investigation.  She has a completely valid annulment which traditional priests mostly don’t accept because they do not have the time, training, or authority to look into it.  She lost her home and as a result, custody of four of five children.  At the time of her wedding, another woman was pregnant with her “husband’s” second child.  She is currently stranded in England due to their lockdown measures.  She went there last March for a job interview, got hired, then let go in July when the company closed down.  Her ex is on his third “wife.”

These are the words of someone who has been looking at porn, and has deluded himself (with the assistance of the enemy) into the false belief is that it's harmless.

You're a retard. Nowhere did I say porn is harmless; and I don't view porn. In fact, I believe it should be outlawed and the producers and purveyors of it should be executed. Penalty should be retroactive, too, as it will eliminate a lot of the J problem in America.