I confuse the hell out of, well, almost everyone with how I ship Holmes/Watson (or Holmes/about half of the canon characters) because I think Holmes is asexual and aromantic but he's still in a relationship with Watson that is way more than friendship (which can include sex, if Holmes is bored enough; it's just he doesn't really get the whole sexual attraction thing). That probably doesn't really count as 'non-romantic relationship' though here, does it?