I'm of the opinion that you do not need to file a partnership return. You can report your share of income and expenses on Schedule E. I'm in a similar situation and that's how I do it.
References: https://turbotax.community.intuit.ca/community/investments-rentals/discussion/co-ownership-on-a-rent...
https://www.johnrdundon.com/co-ownership-of-rental-real-estate-does-not-require-partnership-formatio...
https://www.nolo.com/legal-encyclopedia/filing-your-taxes-when-youre-landlord.html
As to how you enter it; TurboTax (TT) can handle it either way. I find it easier to just enter my half.
