What does that look like for you? Your experience needs to be heard.
In my opinion, I don't think that it is a good thing if both partners are gamblers. Because in gambling, it is not always a win-win situation. There are times that you lose, and you tend to lose big time, then if both of you lose, what will now happen to your life? You might just end up separating. So, it is still better if only one gambles, but not too much, and the other partner controls the other one.
Yeah it's true. I have a friend that he and his wife are really addicted in gambling and when they both lose they just quarrel and put the blame in each other and sometimes my friend cheated on his wife like he spend their savings in casino in just one night. And their children was really affected by their non stop fights and their future is also at stake. To make the story short, they decided to separate but then my friend realized that addiction in gambling will be no good for him and what really matters is his family.
Sometimes addiction, if not properly handled you'll just loss control with your life and ruined it. Just treat gambling as for fun but better if you can quit and just focus your time to the ones that you know what's more important.
It can become a really huge problem if both people in the relationship are addicts, whether it's drugs or gambling, it really complicates the situation.
If one person decides to try and quit, the other person must also be on board with that, or they would just keep enabling each other to gamble.
I hope everything worked out for your friend in the end, getting rid of any addiction is really difficult.