There's nothing hidden under the sun that won't someday be revealed. That's what some people don't know. Someone can't be hiding something from someone close to them without it being revealed to them someday.

If you are a gambler, come out openly to say that to your spouse rather than hiding it. Gambling is no longer seen as a criminal offense that no responsible person is into. We have so many responsible individuals who are into gambling, and they are living happily ever after as a couple. No breakup of whatsoever because one of them is gambling. They do see gambling as a normal activity for leisure purposes.

The man made a mistake by trying to hide his gambling activities from his date(lady). That's not enough reason for the break-up as some of us can say. There might be something else and the lady sees that as a good opportunity to break up the man.