Some important concepts in sex and gender|
Fable 2 is pretty close to "doin' it rite". You can try all you want with some people, but they just aren't interested, and there's a reasonable chance of you landing a member of the opposite sex, too.
It still feels like an achievement, though - there's certainly no romance in the "pose, pose, talk, pose, gift, pose, ring" method of marrying someone. Maybe Fable 3 could have a system whereby certain people (or heroes?) could actively try to woo you, too - instead of just dropping hints about how their friends keep asking them why they aren't married, and wouldn't a ring be nice?