Non-marital unions refer to relationships where two individuals live together and share a domestic life without being legally married. These arrangements can include cohabitation, where partners live together, and other forms of committed relationships that do not involve formal marriage. Non-marital unions can be found in various cultures and may be recognized legally in some jurisdictions. These unions can offer similar benefits to marriage, such as emotional support and shared financial responsibilities, but they may lack certain legal protections. Issues like property rights, inheritance, and parental responsibilities can differ significantly from those in marriage, making it important for partners to understand their rights and obligations.