Good thoughts about Ewen's relationship with Lachlan and the difficulties it presents. It is a strange social dynamic, where Ewen is Lachlan's social superior and commands his loyalty etc., but they were also raised as siblings, and so there's that personal aspect to their relationship. I wonder sometimes what Ewen's relationship with Neil is like—Neil is described as also very loyal, but we don't see the sort of intense obsession we get with Lachlan. How much of that is just who Lachlan is an an individual and his particular relationship with Ewen?

No one has so far written the fic where Ewen ends up in a relationship with Keith, and Lachlan finds out.

I had some vague thoughts in that direction a while ago, but never got to the point of figuring out exactly how it would happen. I very much like your thoughts here! Yes, of course, Keith not having a 'proper' role, and in a much broader sense than the general non-approval of relationships between men, would be very important to Lachlan. Ooh, I want to read this fic now. :D