Favorite romance by sexuality

I admit that my memory about details may not be the best because the last games per franchise that I played extensively were DAO / ME2.

But these are my impressions from the romances I picked:

BG2 - Jaheira: it never got as good as this again
NWN - Aribeth: off with her head! Thanks for playing.
HotU - Aribeth: so romantic (But she's dead. And a ghost. Might cause some inconvenience. Not to mention you're actually a different character than in NWN OC.)
DAO - Morrigan: my semi-recent favorite, as I said above. I even appreciated the break-up part in a "could have been worse (see Aribeth)" way
DA2 - Isabela: that lackluster ending ("everyone left Hawke, except Isabela of course") and then my imported Hawke in DAI stated that Isabela was around somewhere. Sounded a bit lukewarm, really.
DAI - Cassandra: oh, now she's Divine. And you couldn't have married her anyway. Well, back to practicing one-handed weapons, I guess. Will I frigging ever learn?

It's like the writers can't help themselves and just have to throw in a bitter pill somewhere. It has made me jaded towards romances, just like Game of Thrones and its killing of too many characters. "Don't get invested, you'll regret it" is my feeling.

Ah, I see. So it's more specific to the ones you played, then? I guess I was thinking more of the romances as a whole - I think, by and large, they mostly end on a positive note. For what it's worth, from the games you mentioned I've completed Viconia's romance (can definitely end on a bitter note...), Dorn, Anomen, Valen, Nathyrra, Zevran, Alistair, Leliana, Morrigan, Isabela, Fenris, and Sera so that's probably coloring my perception a bit.

I'm pretty sure that all/most of the LI in DA2 get "everyone left Hawke, except Isabela of course." As for the treatment in DAI, it seemed like they really tried to tailor it to the personality of the LI. I've heard Hawke talking about Isabela in a video and I thought it seemed right for her and the flavor of the relationship. Just because they're not together doesn't mean she loves Hawke any less.
And Cassandra has a non-Divine path.

I know that Leliana, Zevran, and Alistair are all still devoted to their partners. Fenris is as well (I haven't heard Hawke's lines for Merrill, Anders, or Sebastian). Cullen and Sera can get married to their Inquisitor, while Dorian makes it clear that he loves his and they're still together (as a couple) even though he is off to be a magister (I can't speak to the other DAI LI).

Sorry you're not happy with many of your choices, but there are also many LI (that you didn't romance) that have nice outcomes, hardly meriting such a generalized statement like "that alone is kind of rare in BioWare's romances." No, it's not "rare."

I voted for femHawke/Fenris, femInq/Cullen and maleInq/Dorian. Fenris is my overall favorite, especially with snarky Hawke. She makes him laugh and he keeps her grounded.

For Merrill: "Merrill is helping elven refugees who were displaced by the war. I didn't want to take her away from that. Merrill's spent enough time fighting for her life with me."
For Sebastian: "Sebastian is the Chantry adviser in Starkhaven. The throne is still in contention there. Without him, it would be open war among the noble families. He'd have dropped everything to come with me but he'd have hated himself for doing it."
For Anders: "I'm never happy leaving Anders alone, but once I realized Wardens were acting strangely, I had no choice. I've seen Corypheus affect Anders' mind before. If he was involved, I couldn't risk it happening again." 

So it seems like for all these three they still deeply care for each other, just either because of those feelings and/or events outside their control they have to be away from each other for a bit. Similar to the Warden and their LI. 

I like how Solas is still losing, but know it's a hollow victory considering how many seem so obsessed with him.

Here the whole supportive line:
 

The non-supoortive also still together, but Hawke talks shit: seems s/he with him just for babysitting: says, that s/he never knew "Anders". 

All version:

The difference: the supportive one doesn't have romance question (I heard you two were close...)

You're alive!

Yep. Finally out of my gaming rut.

Current top three for each!

F/M: Alistair, Cullen, Solas.
F/F: Sera, Isabela, Leliana.
M/M: Dorian, Fenris, Anders.
M/F: Morrigan, Josephine, Cassandra.

Current overall most popular men: Alistair, Dorian, Cullen.
Current overall most popular women: Sera, Morrigan, Josephine.

Of the bisexual female LIs, Isabela and Leliana are much more popular with female PCs than male (4.94% to 1.23%, 4.94% to 2.06%). Josephine and Merrill are slightly more popular with male PCs than female (4.12% to 2.88%, 2.47% to 1.43%).

Of the bisexual male LIs, Anders is much more popular with male PCs than female (4.12% to 1.23%). Fenris and Bull are slightly more popular with male PCs than female (6.17% to 5.76%, 2.06% to 1.23%). Zevran is exactly equal for both (3.29%)!

The least popular F/M ship is a three-way tie between Hawke/Anders, Hawke/Sebastian, and Inq/Bull.
The least popular F/F ship is Hawke/Merrill.
The least popular M/M ship is Inq/Bull.
The least popular M/F ship is Hawke/Isabela.

Some of the results.... don't exactlty line up with what I know about this fandom, but they're interesting nonetheless. I'll probably close the poll in a week or so.