Dragon Age, also from Bioware, had a number of gay romance options, like you mentioned. Though they also liked their surprises on that in both Dragon Age 2 and Dragon Age 3 (inquisition). (seriously, two games in a row the gay romance character I played ended up doing a blaze of glory/disappearing act). Also agree that Mass Effect handled it well for its time. Looking forward to the remaster and what they'll do with it. A next gen release for Mass Effect Remastered would be cool, even worth paying for again, if they do it right.
Greedfall has the options as well apparently, though I'm not far enough in there to see them all out... but that ship captain is a real stud. lol
Coming Out on Top is a gay adventure game. But that's a great deal less romance and more... um.. adventure.