Get your taxes done using TurboTax

...and your tax status is "single"   
 .
 The IRS doesn't care about your dating status, or if you are engaged...You are either married, or you are not.  (Married  or single).
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There is a special status for a Single person with a child, called Head of household (HOH) but that, apparently, doesn't apply to you
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*