What does it really mean to leave parents after the marriage? Many references in Bible points out that Man must leave his parents after marriage. Does it really mean that the parents and wife cannot live together in a common house ?
Mat 19:5  And said, For this cause shall a man leave father and mother, and shall cleave to his wife: and they twain shall be one flesh?
Mat 19:6  Wherefore they are no more twain, but one flesh. What therefore God hath joined together, let not man put asunder.
Eph 5:31  For this cause shall a man leave his father and mother, and shall be joined unto his wife, and they two shall be one flesh.
Gen 2:24  Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh.
Gen 24:67  And Isaac brought her into his mother Sarah's tent, and took Rebekah, and she became his wife; and he loved her: and Isaac was comforted after his mother's death.
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Gen 25:5  And Abraham gave all that he had unto Isaac.

No its specifically referring to sex but some including my maternal grandparents would disagree. Before the advent of modern technology many people did not move far from their place of birth in their lifetime. For instance Isaac did not leave &quot;home&quot; when he married Rebekah. I'm certain there are other examples but caring for relatives especially widows is something which is required of believers. Communal dwellings are common for the very poor and very rich.