Actually I am curious about the usual forum posters opinions...
Of the RPGs you have played, pick your ONE (and ONLY ONE) favorite romance per each game, and explain your favorite overall.
Ok that will sound weird but Viconia in BG2.
Every single RPG I played since then most romance scenes/dialogues tend to be kinda...forced upon me. In BG2 it did feel a bit more natural even if it still remained very simple.
Also I think I just liked Viconia's story and evolution to begin with if you played her in a Neutral - good party.