SEPT 2017 - MAJOR change to De Facto relationship permission requirements
As of Sept 1st 2017, the Irish Naturalization and Immigration Service have reverted the co-habitation requirement from 1 year to a minimum of 2 years. They had temporarily made this change in 2017, but as of now, you will need to prove 2 years of living together.
This will effect the partners of Irish citizens who want to return to live in Ireland with them. If this describes you, then I strongly advise you read the information at the following link: