I have also seen many such example, where the partnership does not last that long. it is therefore very important to file a legal agreement before start a business. A verbal agreement is never a solution.I will advice you not to go into partnership with a friend . I have fallen in such trap before and i do not want to delve into one again . It's a very sad experience for me . One of the disadvantages of going into partnership business with a friend is that you never can tell if has a negative thoughts.