You might try giving up control of money. I am not in a relationship so I am only accountable to myself. However, in order to quit gambling I had to put some blocks in place. I lowered the amount per day I can withdraw with a card, I leave credit and debit cards at home if I am going to be somewhere that has gambling. I carry no more than $19.00 in cash (as $20 bills seem to be a trigger for me). Some people have a payee they give their paychecks to and get a weekly "allowance".
Assuming this is your husband/partner, and this is not the first time this has happened, you might think about seeking some help. 1-800-522-4700 is the National Problem Gambling help line, and they can tell you what resources are in your area. I took advantage of free counseling in my state. Separate your money from your partner's so that you are not able to spend their money. Think about giving up management of the money if your partner is trustworthy and wants help. Do what ever you can to get blocks between your money and gambling. Schedule other things to do with friends on trigger days (perhaps Fridays and paydays). Revive hobbies, visit friends, exercise, meditation and artwork all can help get through an urge to gamble. Writing out a goodbye to gambling can help, re-read it if you have an urge. Make an honest effort and try anything and everything to stop this awful compulsion, because it can absolutely lay ruin to your life.
I came very close to suicide and insanity behind gambling and I do not want to return to that hell.

Typo: If your partner is trustworthy and wants to help. (Is what I meant, not wants help.)

We do things in our addiction -- like telling lies or half-truths, hiding the bank statements, etc. -- that we would never do under normal circumstances. I can only speak for myself, but I believe that until we are totally honest with ourselves and those we've lied to, we won't get free of this addiction. We can make ourselves crazy spending all that energy trying to hide our behavior and keep track of the lies. Unless it's not safe to do so, I think it's important to be totally honest with whoever has "found you out". The whole truth usually comes out sooner or later, and owning it and dealing with the consequences can help set you free. Glad you posted - we're with you.

My thoughts ...

My husband busted me more than once in my addiction, I know it’s scary and it hurts. I can’t blame him for being so angry with me, despite the fact I longed for some compassion from him. I wanted to tell him everything, but to him it was just more blah, blah blah, he didn’t want to hear it, he just wanted me to stop! Me, too, I wanted it to magically stop because I confessed. Magic doesn’t work that way. However, he did sling a cliche at me that actually started to make some sense, “actions speak louder than words”,.. so here’s what I really want to try to convey you, this is your recovery, no matter what, please know you’re doing this for you, and yes, actions do speak louder than words,
Today I will not gamble

Your right Qwit .....It's amazing without gambling.....how much we can do with our money now even though we are getting so much less.... and what we did it with it back then when we were getting so much more. That alone speaks volumes to me. You should be so proud of yourself Qwit !! Also to everyone who walks away from gambling....I commend you !! ! I also still go to supper at the casino but I do what Qwit suggested ...take less than 20.00. It works !!! It's still hard and I fight with the demon every weekend but I always try to find something else to do. I will not gamble today.

Honesty is hard but it is part of doing the next right thing and getting to recovery. I am saddened that this person wanted a solution that involved telling her spouse "as little as possible." It is sad that they seem to want strategy for covering up and continuing to gamble, rather than coming clean and strategies for stopping. As it will be that much longer to recovery. I hope that I am mistaken. I hope their silence is just a sign that they are busy, self-banning or writing out a good-bye letter to gambling. Are you still there szatsme? Are you making changes?

Honesty..... For me I had to check my motive, was I being honest because it was time to start healing, or was it a manipulation tactic; I got honest, so back off.. Only I knew the truth. My husbands anger usually steamed from fear, I was taking chances on our whole life. By the grace of God, I’m going on 38 years of marriage , honesty and trust are the glue that’s held us together. How many times was I honest and told him about my gambling with the crocodile tears, which were really feelings of self pity. He loves me and consoled me. That was just the move I need to set me up to go again. To thine ownself me true. Are we honest because I’m sick and tired of the self destructive life or because I need a person to back off me? Surrendering and looking within myself to be rigorously honest is a great way to get on the recovery journey for me. I will not gamble today, and May God help me put action to my words.