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.