Yes. You can get a divorce in less than one year on two grounds: (1) if you can prove that your spouse has committed adultery or (2) that your spouse has treated you with such physical or mental cruelty that living together has become intolerable. If you wait for more than a year, you do not have to prove anything, and the divorce can proceed. The vast majority of people do the latter because divorces often take a year or more to complete anyway and because waiting is less costly than going to court to prove adultery, or physical or mental cruelty.