I've also read (but not been told) that they're a couple too but I don't believe it. For Rita to blatantly refer to Cara as 'wifey' makes me think there's nothing more to it than friendship and they're after any publicity they can get.
And yes lots of other people go unnoticed because they're 'friends' and nothing more in the eyes of the public and the press. Hiding in plain sight.
Yeah well each to their own. But I stick by what I know.