If you know the essence of marriage, you will never have the idea of hiding your gambling activities and addiction. That’s an insult to your partner, while she made it all transparent for you, but you chose to be secretive on her because you know gambling addiction will never do good for your marriage.
Know your place as a husband/spouse, you’re supposed to be building the foundation of your family to make it strong, but what you did is the opposite, and that would lead into a divorce that any couple or family does not wish to experience. Get rid of secrets, but chose transparency and family over the greed for money.