I had a friend that gambles only during the weekends, he claimed to gamble for fun only but In two weeks he was losing more than 300 dollars, and I asked him if he an addicted gambler but he denied it. Most gamblers are just afraid to admit that they are actually addicted, it doesn't matter if you gamble occasionally as long as you have no limit or control those few times you gamble you are dealing with an addiction problem. How do you know someone is addicted to gambling? It's very simple, if they keep losing significantly and it keeps progressing, that's an addiction.