I'm nearing the end of the game and decided to romance Triss, importing a save where I've decided to save Triss at the end and do everything possible for Geralt and her to be a couple. Now [spoilers] I've rejected every proposition made by Yen, only said "I love you too" to her after capturing the Djinn and making *that* wish.[spoilers]
The thing is that I think that choosing that option at that particular moment broke somehow the romance between Triss and Geralt, because whenever I ask Triss (in "casual" dialogues outside of any quest) about how does she feel, all I get is a "so-so" and "why do you ask?". That leads to what seems another set of dialogues but the only option Geralt gets is "I think we should change the subject" or something like that, it's like the other answers, which would lead to a conversation, are missing.
Is this a bug? Anyone experiencing the same issue? Shouldn't have said that to Yen? I feel like Geralt was left in the middle without either ham nor cheese.

That's so sad. :-s

So a Yen - Triss threesome is a no-go? Hmm... Hard choices damn it, in the previous games I ploughed Triss a couple of times, now I wonder if i should do the same or go with Yen for change's sake :P

Yea I got that feeling as well, it feels like the devs wanted to focus on Yen exclusively. Too bad..

Yea apparently there's a little treat before it all ends if you say "I love you" to both Yen and Triss (even if you only have sex with Triss). I'm uploading a video showing the sequence as it's pretty funny, but it'll take time, about a couple of hours. Wish there were more dialogue options with Triss, it sure feels like a budget chop.

https://youtu.be/0Q9N1AnHPvE
There, for anyone wondering the same thing, that's how it all ends when you say "I love you" to both of them.

Yes, they probably put more work into that scene that RetroRebel posted, than into the whole Triss romance.

Wow that was shitty! :-s
Thanks for the video. Bummer

That sucks. I like Triss! :-(

Well tey are about to add a new outfit for Yen. I hope they will also do so for Triss!

They should add a DLC where you get to visit Avalon or any other isolated island and stay there with Triss forevermore. Also, there should be a monkey butler, and a whole array of tropical drinks.

Triss her romance indeed was a disappointment. It's also over the whole CDPR forums. Forexample check this thread: http://forums.cdprojektred.com/threads/40694-The-Triss-content-and-the-inconsistency-of-our-romance-s-choice
Sums it up pretty nicely.

I really hope they add some Triss content to make up for it because I love the Triss character far more than the Yen one.

Well I would vote in that poll, but I can never register or log in to that site.