My opinion in such a situation.
* You are a wife, of course you know your husband's activities, look and investigate first, whether he is angry or happy when you talk about gambling, don't tell him you gamble first, provoke him about gambling, If his response is positive and happy about talking about gambling, then you talk about how you gamble. On the other hand, if your husband's response is negative towards gambling, don't occasionally say that you gamble, he might get angry and divorce you.
In situations like that you have to look at both, sometimes there are husbands and wives who both like to gamble, there are also vice versa, the wife gambles, the husband doesn't and really hates gambling, so it depends on the situation between the two, after that you can talk about something, after both understand the situation.
You are correct in your idea and suggestions I think we have both engaged in gambling discussion before I didn't see him respond negativity, just that he was neutral while talking with him about few matches that plays some days ago. Just that he was wondering how I suddenly began to pick up interest while before he was the only one who loves watching football and wrestling, my sudden interest made him started wondering, though he might be suspecting me and who knows that was why I raised this topic to have a collective idea to know how to handle this situation at hands.
Anyway.. thank you for your contribution +1 for you, I am out of sendable otherwise I could have credited.