still doesn't reveal much to us, betty. we need the full on , juicy details to pass judgement/laugh/point fingers/offer support. obviously as we don't know the issues yet, we don't know which response it will be (just jesting...)
If it is to do with the past relationships before you met, I wouldnt see a problem.
There were many things I never told my fella when we first met and kinda twisted the truth as I thought he would of run a mile! But after being with him a long time and knowing that to him the past doesnt matter, as that is exactly what it is, he now knows everything!
As above, would depend what the secret is and why it had not been revealed sooner.
Could be anything from sleeping with a best friend to same/other sex liasons to having children or just a few white lies about being far more or less inexperienced than is actually true.
you said about a past relationship and was silly and pointless to lie about so if it was and you would have been ok about it then forget about it, lifes too short.
You are all presuming the secret was revealed by 'the other person'. Perhaps it was betty who told all, and the partner has gone flipsy?
Of course it is still random and generally depends on the secret and the circumstances. Too many variables to provide an informed response or any advice.