Thiaguinho-sama
I didn't find anywhere in TV Tropes saying it's only yuri or not, I think it have some het routes, but the main routes seen to be all yuri at least
I might be wrong, but I think I recall one route where the Duchess marries the "prince". But it's not written as a love story, more like "Oh, you're here? Okay, let's get married, that's what I came here for I guess." You don't have to play it to get the true ending, but without a guide you might stumble upon it by accident.
Alien
I've started watching Person of Interest partially on this thread's recommendation
If my incoherent rambling helped even one person who was on the fence about watching, good :D
Don't expect much in the way of romance though. POI doesn't really do romance, even the het pairings are mostly teased and implied except in flashbacks. You actually could argue that Root/Shaw is the present-time romantic relationship that gets the most focus. Which is great because you can appreciate the platonic male/female relationships without worrying about the writers shoving an obligatory romance down your throat. Reese and Shaw have an amazing siblings-like relationship.
Sorry for gushing about this show again. If I didn't restrain myself I'd just take over the entire thread.