DTI ratio question

[Tyler Ingram]

My fiancé is on the mortgage of our primary home, but I am not. We do split the payment but there is no lease or anything legally binding forcing me to pay each month. 

We’re looking at buying an investment property with me being the only one on the mortgage, as I don’t currently have any debt. 

Would the amount I pay her each month count against my DTI, or would it not since there's nothing registered with a credit agency or other entity tying me to that payment?
Thanks in advance! 

[Matt Miller]

Quote from @Adam Corrigan:

As long as you are not cosigned on the debt and are not on the title of the property I will not count against your personal debt to income ratio. 

PM me if you have any additional quest

 This. 100%