Why yes, I wasn't suggesting otherwise. But the relationship may continue for several years - what then? Depending on how much time the partners spend together over the course of several years time, I believe a good solicitor can argue that a co-habitation-like relationship has existed. And you will also note the possible changes regarding civil unions. I thought you were trying to suggest to the lady that she had no hope of qualifying, full stop, which sounds questionable to me. And, of course, there are other categories under the Immigration Rules pursuant to which one may legally reside in the UK.