Financially Irresponsible Husband

I just don’t know what to do! My husband makes more than me yet he doesn’t have a savings and has a gambling problem. Yesterday after work he goes to the casino loses money. He said can i spot him $300 to put into his bank account so he doesn’t go negative from previous pending transactions he didn’t think about when he was withdrawing money to gamble! I told him i shouldn’t have to because this is his fault. He thinks because i am a his wife i should always help him out and now he isn’t talking to me like wtf! I swear sometimes i wonder how i ended up with someone so opposite of me!