Amanda and Christopher decided to open a neighborhood natural-foods tore together. The store had been at the same location for many years and had developed a loyal following. Under their informal arrangement, Amanda had managed the business and Christopher supplied capital to the business as needed. They divided the profits and losses equally. They leased the building in which the store was located and had regularly tried to purchase the building for the partnership, but the landlord had always refused. Six months ago, however, the landlord called Amanda and said, "I thought you would want to know that I'm planning to sell the building." The next day, Amanda sent Christopher an e-mail: "I am leaving our partnership. I will wind up the business and send you a check for your half share." Without informing Christopher, Amanda then contacted the landlord and offered to buy the building. The landlord accepted, and the two entered into a binding purchase agreement. One month later, Amanda took title to the building. Three months ago, Amanda sent Christopher a check for half of the store's inventory and other business assets. Instead of cashing the check, Christopher sent Amanda an e-mail stating that he regarded the partnership as still in existence and demanded that Amanda convey title to the building to the partnership. Amanda replied that their partnership was dissolved and that she had moved on. She then began to operate the store as a natural-foods store with a name different from that of the original store, but with the same product offerings and the same employees. Christopher has sued Amanda for withdrawing from the partnership and for breaching her duties by buying the building from the landlord. Was there a partnership between Amanda and Christopher? Explain fully. Did Amanda properly withdraw from the partnership? Explain fully. What duties, if any, did Amanda breach by purchasing the building? Explain fully. What was the legal effect of Amanda's withdrawal from the partnership?