Exactly it could affect your relationship with your partner or even your family or friends, I think the best way is to control yourself while doing this and not fall into a greed that could ruin you financially.
It'll be better when you get involved in gambling, just by doing it for fun and not as taking it as a source of income.
Absolutely I buy your conclusion, it is better doing it for fun than gambling for financial income. Gambling for fun will never affect your relationship.