Head of Household and earned income credit
My son and his ex-girlfriend had a baby the end of 2017. He claimed the child for 2018. They broke up at the end of the year. They were never married and do not have court approved custody arraignment. They agreed to split who gets the child tax credit every other year. She took it for 2019. Can my son take the Head of Household and Earned Income credit since they lived together the full year?