There are many reasons people might separate and remain living under the one roof. You may be legally separated even if you still live together, but are living separate lives. Living separate lives means you do not spend time together socially, engage in family activities, perform household duties for one another and do not sleep together. You should have also told family and friends that you have separated. Your date of separation might have an impact on your entitlements when the time comes to divide your finances. It is important to discuss the implications of living under the one roof with your former partner with an experienced family lawyer.