I don't understand what you mean by refusing to share it with him?
Once married, whats yours is his, and what is his is yours.
In most marriages, one person handles paying the bills etc...but that does not exclude the other person from being informed as to what is going on.
Is there a reason your husband is not working and contributing to the financial responsibilites of the home?
If, when he does have money in his possesion that he blows friviously, and that money is needed for the expenses of the home, then I agree you have a right to be concerned. BUT, if you both have an allotted amount of spending money after NEEDS of the home are taken care of and he is not spending the money on somthing dangerous, or potentially hurtful, or something as a couple you decided against, (ie: alchohal, tobacco, guns, pornography, etc) then he should be allowed to spend his portion of that money as he chooses.
Just as you should be allowed to spend your portion as you choose. (a new outfit, new make-up, new shoes, going out to eat, etc)
This is definitely an area where numerous couples struggle because they do not spend enough time talking about it and prepareing their expectations for and of one another in marriage concerning how money will be handled.
It sounds like the two of you need to go back to square one and set a new plan for the household money. (Also, unless there is a VERY good reason, then your husband should be working as well.)