Selling a joint own rental property

I co-owned rental property with my ex-boyfriend.  We split the deductions each year.  We entered the full amount and then claimed 50% of the income and expenses.  We sold the house and each received 1099-S for half the proceeds.  I assume we both claim 50% of the expenses to go along with that.  The problem is when I enter half, it compares it to the values I entered when we put the rental in service (full value). When doing this it shows a large loss which isn't the case.  When I use the full proceed and expenses, it creates a rather large debt and I can't do that on both of our separately filed taxes. How do I claim this sale? I do both of our taxes