Unmarried couple / partners: Form 1098 (Mortgage) What amount to report on our separate tax returns?

Situation:

My partner and I are unmarried and jointly own a house. We are filing single for the 2022 Tax year. I received the Form 1098 already.

 

Question:

When reporting the 1098 amount requested in TurboTax, do we split the total (e.g. each of us reports half the total amount), or do we report the full amount?

 

Some notes regarding what’s on the 1098:

1. My name and my partner’s name are on the mortgage.

2. My social security number is on the 1098 as the Taxpayer TIN. My partner’s is not.

3. We split the monthly mortgage payment 50/50, and I make the payment each month.

4. One tax preparer I’ve worked with in past years mentioned that my partner and I are free to divide it any way we’d like, but I’m also seeing other experts in various forums say differently, so now I am still confused.

 

Thank you in advance for any clarification you can provide.