@leslie35 agreeing with my colleague @Anonymous_ , you used the term "partner" . If you live in a state that allows common law recognition of marriage ( i.e. you two hold yourselves as "married" for all intents and purposes and file jointly ) then you may have a little more leeway. A bit contentious though. Else in order to satisfy ownership clause you may have to resort to much paperwork and meet the equitable ownership demonstration.
You may get some benefit from discussing your case with a tax attorney.
That is my three cents.
