I wouldn't say there's any romance in a game where I was like "Oh my god this person is incredible... I AM DOWN BAD." I can say that I used the romance features in games where they were available, so there's that. Might as well throw my two cents in:

-Mass Effect 1: Romanced Liara (Disappointed with the writing in this one though for all options)
-Mass Effect 2: Miranda
-Mass Effect 3: Tali

-Dragon Age Origins: Morrigan
-Dragon Age 2: Merrill

-Baldur's Gate 2: Viconia
-Baldur's Gate 3: Shadowheart

-KOTOR: Bastilla

Remember the human (This is a forum for a video game):