LOVE AND CLIENTS?

Is it a grey area as to the permissibility of dating a client? There is someone I have recently shown a house to and it appears that she will be buying it, and we really hit it off more so than the normal client. Being a new real-tor and a young one at that, I would love some feed back as to what the ethical thing to do would be. If anybody has any suggestions, please let me know! I'm wanting to take her on a date such as a dinner a movie or a picnic even, but I'm not here trying to ask for dating advice. I'm curious if there is any ethical objections regarding this and if so I want to make sure I don't step over the line. Thanks!