My husband is like Christian Grey in Fifty Shades of Grey! I'm not into the dominatrix submissive thing at all. What should I do? Is that grounds for divorce?

You can voice out your opinion to your husband if you seriously do not feel that it is your thing. A man who truly loves you will not force anything on you. You'll be taking your vows too lightly if you think of divorce due to sexual incompatibility. Has your marriage broken down irretrievably due to this BDSM fantasy your husband has? If not, it is not considered as a legitimate reason for divorce. http://www.lawsociety.org.sg/forPublic/YoutheLaw/Divorce.aspx