and when it comes to marriage, we should all inform them especially if there is money involved because it can even start or cause a fight and misunderstanding, maybe in the end it will even be reprimanded. Others say that our partners don't need to know all the moves, but for me, when you enter the world of marriage, what you have will automatically become his too, so they should really know everything and if you have respect your partner, you won't keep secrets because at the end of the day, you two will be on your side and will help each other especially if there is a problem.
To me it depends, while being honest in your marriage is key, at the same time you do not really need to tell your partner everything you do if it is not that significant, so assuming a person is earning thousands of dollars per month and they gamble a few bucks each week, that is not enough for me to raise some kind of alarm for being dishonest or anything, as each person within the marriage should have some freedom to spend some money in whatever they want, and only once the amount of money you spend reaches a certain point, then you must tell your significant other about what you are doing.
Of course honesty or openness is the key to harmony in a relationship and I understand that there may be some things that do not need to be told to your partner, but this is gambling buddy which involves money and also involves the risk of losing money, and you also said it above that a partner is advised to tell about his habit if it is significant and is not the possibility of losing a large amount of money an undesirable thing? And wouldn't that be a significant event? Of course, so what we have to look at here is the context of the habit which is gambling which over time can increase a person's interest in gambling and of course the consequence is destroying the financial balance.
So maybe there are two things that can trigger problems here, first your partner might scold you for not being open with them and the second is experiencing financial problems when gambling has become a priority for you which is possible over time for someone to experience an increased interest in gambling, on the other hand even though for example the amount allocated is not too large, it is possible that one day they try to put a larger amount and the impact can disrupt family finances.