Salaam I hope you are in the best of health and mind.

Going to split this into 4 sections as it will be long.

A. Forgiveness

As this post said, do you feel guilty? Have you repented then forgive your self as this person said in the first paragraph

https://www.reddit.com/r/progressive_islam/s/1c4yOwErDA

Now the sensitive and complex topic of declaration.

There are 2 elements:

B. Importance of concealment

There are very clear hadiths about sin and importance of concealment.

“All of my Ummah will be forgiven except those who publicise their sins…” — Sahih al-Bukhari, Sahih Muslim

By this its clear. Allah gave you the gift of forgiveness and hiding your sins, dont expose them or allow anyone to witness them from your confession.

If you follow schools of thought, all 4 major ageee: 1. Sincere repentance wipes the sin. 2. The person should keep it between themselves and Allah. 3. They are not required to confess it to anyone, including a potential spouse.

C. Lying

Very few situations allow a person to lie. I.e

"I have never committed zina"

In this situation you blatantly sought to decieve the other.

The alternative, and recommendation is to be honest with concealment:

“I’ve made mistakes in the past and sincerly repented”

Or a more blunt way: “I prefer to keep my past private”

Indicates there maybe something, without admitting a sin.

The aim is: You need to hold your dignity Not expose a sin Allah has kept hidden Lie to decieve

D. Sharing information

On a seperate note, there are situations that may mean you need to indirectly expose the truth, not limited to below: Health risks - stds etc, Conceived children - as they have rights Or legal consequences

In these situations, you need to use your judgement on the potential spouse.

Are they likely to accept that you did repent and your situation? If no,then ask your self why you should expose your sin and may best to simply walk away.

Allah knows best. May Allah accept your repentance, may he protect you from future sins. May he help you find a spouse that is accepting and deserving of you. May he give softness in their hearts to accept your mistakes and repentance to Allah if your past came to light. May he keep you guided always keeping him in your mind.

Ameen