When I File My Taxes For 06 I Claimed All The Intrest On Our House Payments, I Was The Only One Making The House Payments For The Year Of -06, He Refused To Make Any Of The House Payments, We Were Both On The Deed And Responsible For The Mortgage. He Says He Already Claimed 1/2 And I Was Now In Trouble With The Irs, Is This True?

When I file my taxes for 06 I claimed all the intrest on our house payments, I was the only one making the house payments for the year of -06, he refused to make any of the house payments, we were both on the deed and responsible for the mortgage. He says he already claimed 1/2 and i was now in trouble with the irs, is this true, i did make the house payments so i think im intitled to the intrest payed, please let me know, thanks.