A letter written by a woman to her live-in companion, which promised the companion a 50/50 split of the couple’s assets if their relationship ended after the two moved together from New York to Atlanta, is an enforceable contract, a Manhattan Supreme Court justice has ruled.

Justice Herman Cahn rejected claims by the woman, Meril Joseph, that the letter was not enforceable because it did not obligate her companion, Christine Oms, to move to Atlanta, and merely set forth a promise by Ms. Joseph, unsupported by any consideration.