Romance is one of the most complex human behaviors, and for that reason its implementation has never advanced past it's infant stage in the game industry. Basically all the "romance" we've seen in RPGs are shallow, corny, simplistic quests that only serve to make the world less believable. Firstly because it makes the world feel like a teenager's unfulfilled fantasy and secondly because our perception of romance is very different compared to other societies throughout history. Basicaly what RPGs always get wrong is take modern day "romance" and artificially put it in a world were it makes little sense for romance to work like that. Also, from a roleplay perspective romance options are always horribly limited - both in the actual dialogue, the characters you can get involved with etc. It is not possible to implement romantic relationships properly unless you give them a very important role in the game, and put a lot of time, effort and creativity into it. So, personaly, I'd rather not have any romance at all - put all that effort into making the game better at what it does and leave the romance stuff for dating games.