Two things are involved. One is, did your husband understand how gambling works or not? The school question is: even if he doesn’t view gambling in a positive manner, if he wishes to start gambling, will he be able to control his emotions and finances? If you get these two answers, you are covered by the case study. This is your husband, so you are expected to know many things about him, which include his reaction to things that he doesn’t like. You will find it easy to know if he likes gambling or not. 
 
For instance, you will have a discussion with both of you about the fact about the fact that you saw a film that was fully focused on gambling and you found out many things from there, so what is his view about gambling? So from here, he will be able to express his feelings about gambling. You don’t tell him that you are the one doing the gambling because if he hates it, he will definitely be angry with you. That is why sometimes you have to use some strategies to ask other people for ideas without their knowing.