Can I charge my husband for using my credit card?

My husband & I are separated. When we got married my husband didnt have credit cards so I have given my cards thinking that we 're a happy family. He promised me that he will take care of the payments so I wasnt really looking into the statement. Right after we got separed he promised me that he will not use and will make the payments . Since then he hasnt made any payment but keep on using it. what should I do now?