I have a 1099 C for a forgiveness on a second mortgage for my primary home. It was granted in Aug 2017 per the form I received.Is this taxable income?

I received the original paperwork that my debt was forgiven in July 2017. However the 1099C says aug 2017. It's a second mortgage. My ex husband also received a form for the same amount bc the mortgages are in both our names. But he received a 1099c under his name alone with the SAME amount. Do we split the amount???how does this get entered?? I file HOH w my kids.