How to throw down the gauntlet to my cheating, gamble addict husband?

My ostensible other half and I have been running through a sticky patch recently. I've been disillusioned by his despicable habits, and to cap it all, our nanny has claimed to have seen him and another girl kissing in our larder. How to make him own up to this heinous debacle. Shall I divorce the pest, you think?

How to throw down the gauntlet to my cheating, gamble addict husband?
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