I am engaged in futures, and I know its charm and evil.
Study with your husband, or he will want to earn back if he loses, and will want to earn more if he earns, and will not quit easily.
Don't comment, observe with him and let him tell you the market. He loves you, too, but he is infatuated with what he is interested in for a while.
If there is no other tough solution, try this.