I REALLY hope this isn't what they do,
1. they already said the NPCs will be like Fallout, where only important ones have dialogue,
2. if you can romance anyone, Romance options will consist of spamming them with presents instead of custom written storylines for romancing them, making them have no emotional value *cough* Fable *cough*
So choosing wither romancing anyone or only a few is choosing between deep romances involving dialogue and quests, or generic ones where you bribe them to get disposition up.
*Dances 3 times and belches*
''A wedding ring would suit my finger''
*Buys cheap wedding ring*
''We need a house to move in''
*Buys cheapest house in town''
''Let's get married''
*Marries, has six, kid, don't care about the wife because it was lame. Leave and never get back to her or just kill her*
Fable romance system in a nutshell. It's laaaaaaaaame.
It also didn't make any progress from the very first one to the most recent one. In fact, the females in the first ones were the most attractive.