可以直接申请婚姻无效 (annulment)The grounds for an annulment are: One of the parties was already married to someone else when the marriage took place Willfully not consummating the marriage Not consummating the marriage due to incapacity Mental illness that makes the person not fit for marriage The spouse is pregnant by another man If it can be proven that the spouse had a communicable venereal disease before the marriage took place 这个比离婚要彻底，因为annulment的法律效应是把结婚状态打回到这段无效婚姻之前，也就是说在法律意义上，这段婚姻从来没有发生过。如果你这段婚姻之前没有结过婚的话，那你在法律上就是Single, Never Married! An annulment is a legal procedure to dissolve a marriage, declaring it null and void. However, unlike divorce proceedings, an annulment works on the basis that the marriage never properly existed in the first place. (http://www.singaporedivorcelawyer.com.sg/annulment/) (more...)