Dreaming that you live with someone when you do not in real life can mean:
The person is a part of your life, interacts with you often, or seems very familiar to you—perhaps because you know them well or because you've been thinking about them a lot lately
Your subconscious could be exploring what it would be like to live with this person
Possible dream symbol meanings in the dream dictionary are suggested. No "standard meanings" exist because dream meaning is subjective and specific to the dreamer.