I am sorry but then pleased you have met someone else.
Acceptance of others is an everyday activity and everyone has secrets they would not want to mention when first meeting you.
Remember that it takes time to learn if you can trust someone. Our loneliness, emotional anxiety and desperation to be part of a group / society can make us to ready to accept that someone is good because they seem to accept us.
We ex-offenders (I know you deny it) have the added pressure of disclosure as a moral duty when we get very close to someone, which is appropriate as part of building the trust in a relationship. However before commiting, take time to ensure the person is whom you think they are. Try small disclosures or raise conversations about offences to try and judge their character and feelings on the subject.
I do not know if you were supervised by probation but I can honestly tell you that they have no understanding of how it feels to disclose an offence and the accompanied feeling of anxiety because you think the person will reject you. Then the paranoia from the thought they will seek advice from others so a lack of control develops.
In the end be prepared for your past to be highlighted when the relationship is stressed. Then it is upto you to decide if the relationship is worth any possible punishment.
Finally consider that an ex sex-offender, who changes their name and location, has to go to court to apply for any conditions to be removed. Therefore it is possible for the 'papers' to reveal their past and new identity even though the person may have been recognised as a low risk and completely rehabilitated person. That person has the same decision as you are talking about when considering applying.
Be happy, considerate and compassionate to others in the hope they will be the same.
Learn from yesterday, live for today, hope is for tomorrow else what is left if you remove a mans hope.