I definitely agree with this sentiment. Much as I don't want to. I feel continuation of the Solas romance is unlikely not just because of the practical difficulties from a logistic standpoint, but because I feel that the writer intended for it to be a permanent breakup. Like in this case, aufgeschoben IST aufgehoben. Relationships don't always work out. Sometimes it's because distance or circumstances conspire to keep people apart; sometimes in spite of real love, personalities just don't mesh; sometimes it's because one party is an ancient demigod who plans to destroy the current world in an effort to restore the glory of a lost civilization. The point is, rejection hurts no matter what the reason, and there isn't any real cure for that. As much as I want a DLC where I can give Solas a good shake and demand that he uncrush my heart, dammit, that pretty much never happens, and I think that is a truth that Patrick Weekes wants us to appreciate.
My personal problem with the Solas romance being well and truly over is that there is a long history of the straight female relationships ending in similar ways. Cheating, death, breaking up with you--the ONLY female character BioWare has written who does anything similar to male players is Morrigan.
Yes, we get it. Sometimes relationships don't work out. If we didn't get it by this point, after BioWare telling us so time after time after time--or if not our LIs leaving us, or dying, or cheating, or breaking up, then loving someone else more--then we would have to be pretty dense. But, already in this game, Blackwall apparently vanishes if you romanced him--and that's assuming you're okay with his lying to you about who he is and using that to get into bed with your character. Cullen, who was, like Solas, added last-minute, is the only other one I'd be remotely okay with a romance with.
I said it before and I will say it again: YES, I AM BITTER. I'm bitter and annoyed that it's the straight ladies who can't seem to keep a pixel-relationship, because apparently the writers or the developers or SOMEONE thinks that this is what we like, when instead it often makes us angry or frustrated or just downright sad--sad enough that this thread is pretty much fueled on equal doses of sadness and hope.
I'm okay with the occasional tragedy, but it's not even occasional anymore, it's routine. As in every single game, as in at least one of the romances available to women. And if it happened to straight men this often, well, they would be storming BioWare Edmonton!
ARGH.
Okay, rant over...
I'm not convinced that there's no chance for a happy ending, despite the difficulties they face. I'm planning to cling desperately to team optimism until DLC proves the relationship is over for good.

Yes, I think there's always a possibility for a happy ending until the last DLC is released. Even if not happy, I at least want some kind of resolution to it, one that I get to choose through my own actions. For instance, if I let Solas kill those mages in his personal quest, then maybe in the future he will not let anything stop him, not even my romanced Lavellan. But, if I stopped him, maybe he'll stop and think about Lavellan's compassion. Something like that.
I'm taking it as permanent too, until further notice.... but I tend to think it has more to do with the fact that we'll likely be getting a new protagonist for the next installment. Or if not, I just hope they don't pull a Jacob, where it's like it never happened and he's all derpy about it. If they handle it similar to how they handled Morrigan, that would be nice. Morrigan's romance with The Warden had an impact on her characterization and I would hope the Quizzy did the same for Solas.
There have been precedents for plot-DLC that added additional romance content. This happened both for DAO and ME2, and yes, ME3.
The Jacob thing isn't the only thing they've done though. Or have we forgotten Alistair's breakup if you don't harden him or decide it's okay to be his mistress (assuming you are not human noble) or Thane's death, or the fact that Blackwall apparently vanishes from Skyhold (but can still join your party) if you romance him--oh and Blackwall totally has a sex scene with the Inquisitor under an assumed identity, and that's also very much Not Okay.
I want resolution, plain and simple. If it's possible to have a happy ending, I want that. Even if it means Lavellan has to go villain to do so (or be treated as such later on, regardless of her intentions). I want resolution so badly that I'm writing a horribly depressing fanfic in part to settle it, and I'm not even sure if my Lavellan and Solas will even be together in the end of that once the plot is finally resolved. But at least it will offer me some sort of headcanon-y satisfaction in regard to knowing where they stand in the end.
If liara got a romance in her DLC. and Morrigan got a romane in her's. THEN I WANT A ROMANCE IN THE SOLAS DLC!
Yeah, me too. Again, I'm kind of sick of the ladies being expected to be okay with our LIs cheating, breaking up, leaving, or dying. It's totally not cool, because it happens far, far too often, along with the "lost love he loved better than the current one" thing. Just... no. Please, just no.