Do i have to file married if i been married less than 6 months?

If you are married on December 31, 2014 then for tax purposed, you are married and should file married filing jointly or married filing seperately. These are your two choices if you are legally married. If you have been legally seperated for at least the last six month of the tax year and you have legal seperation papers from a judge, then you can file as if you were single. Both of you need to make sure you file the same way if you are filing in this manner.