I'm more about the dialogue than any sex-scenes too. I plan to skip the very first opportunity to bed anyone. Every since Mass Effect it started overdoing it in the third part it's been spiralling out of control. Leave something to the imagination!
The one I want to romance is Jaheira (even at 300 years old) since that was my first one in BGII, too. I hope it's possible. Failing that Minthara rises to the top, she really stands out among the rest with her strong personality and amazing looks.
It's amusing to see Shadowheart and Karlach in the lead for this poll, since those are the only two I do NOT consider romancing, because of their VAs.