Who can be a common law couple?

Being a couple is about a lot of things, including survivor rights and medical visitation and decision-making rights...

Inseparable Israeli Sisters Fighting to Be Recognized as a Common Law Couple
"A day in court with two nonagenarian sisters, refugees from the Holocaust and constant companions, who seek the unprecedented status so that the one who lives longer can inherit the other's old-age allowance."

"The claimants, it turned out, are asking the National Insurance Institute to recognize each of them as being eligible to receive a next-of-kin allowance upon the other’s death. Effectively, they want the NII to grant them common-law status recognition.
A disturbing thought ran through the judge’s head. “Are you telling me that …” she said to attorney Igra who, guessing her thought, dismissed it with an “Absolutely not,” and placed before the judge a court ruling stating that sexual relations are not a condition for common-law recognition.
Relieved, the judge went on to sum up the lives of the two sisters in a few sentences, as she began reading her judgment. The claimants have lived in the same unit of a protected housing project since 2007. The claimants never married, are single and have no children. The claimants have a joint back account, and their old-age allowances have always been deposited in that account. The claimants manage their income and their expenses from the same bank account. The claimants purchased adjoining burial plots. The claimants’ only journeys abroad took place between 1995 and 1998, and always together, according to the Interior Ministry’s border inspection records.
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"The Labor Court, though acknowledging the innovation and feasibility of the claim, did not accept it"

This request was not accepted by the Israeli court, but it is food for thought.