Pathfinder Kingmaker made it mostly right. You have some characters that are straight (Valerie, Tristian), some bisexual (Octavia and Regongar). I think there was no one straight homosexual, but maybe I don't remember, since I didn't actively look for it.
The only things I didn't like were:
(1) I couldn't romance Amiri with either sex, because she is some kind of original character (2) It was far too easy to break up Regongar and Octavia. They basically immediately dump each other for the player.
