You say she is your GirlFriend? You are not legally married? Are you in a state that recognizes common law marriage?
( CO, DC, CO ,IA, KS, MT, OK, RI, SC, TX, UT)
If you are not--then you have been filing incorrectly. You cannot use Head of Household as your filing status if the dependent you claimed is not biologically related to you.
Am I Head of Household?
https://ttlc.intuit.com/questions/1894553-do-i-qualify-for-head-of-household
https://ttlc.intuit.com/questions/2900097-what-is-a-qualifying-person-for-head-of-household
If you qualify as Head of Household, when you enter your filing status (single or married filing separately) into MyInfo, and then enter your qualifying dependent, TurboTax will offer HOH as your filing status.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
