So far, I've completed Adamant, but not yet the Winter Palace mission. I've never had any option on the dialogue wheel prompt me to officially start a romance with him, so I'm wondering if it's actually happening. (I got that for Cullen in my first playthrough.) Sera has already commented on us being together during party banter and Solas has called me "his heart," or something like that, when I've gone and talked to him at Skyhold.
I think my last cutscene with him that was romance oriented was when we talked on my balcony about what I was like before I got the anchor. I had an option to flirt with him after completing Adamant, but nothing happened really. Also, I thought his tarot card was supposed to change, but it's the same one he's had all game, the one of him wielding a little flame over his hand all hooded and hedge-magey.
Did I mess anything up, or is this how it's supposed to go, so far? Also, please don't spoil anything that hasn't happened for me yet. I realize Solas leaves at the end of the game (this is my 2nd playthrough), so it's obvious he won't be around when my main campaign is over, but I don't want to know anything else specifically. Thanks!