Alice has a roommate named Roberta. Alice and Roberta do not…

Alice has a roommate named Roberta. Alice and Roberta do not get along so they divided their rental with an imaginary line.  However, as tenants, both Alice and Roberta are entitled to full use and possession of the property. Alice put her sunglasses on Roberta’s “side” of the rental. Roberta now owns the glasses because they are presumed to be a gift.