URGENT: Need a comprehensive response.

Case study three Kristina is a client with a community housing organisation who has been supported by her case worker John. She and John are of similar ages, and through conversations they have in their professional interactions, it seems that Kristina and John share several interests including similar taste in food. John is able to find an independent community accommodation for Kristina and soon she will no longer be a client of the community housing organisation. A few weeks later, Kristina visits John in his office. During that meeting, Kristina mentions that she has also found work in an entertainment company. In her work she receives many free expensive vouchers to restaurants. She invites John as a date to an upcoming opening of a new restaurant because she remembered that she and John have similar tastes in food. She states that as she is no longer a client of the organisation, them seeing each other socially or casually should not be a problem. What should John do