Relationship Mechanics Work Because The Game's Creatives Value Human Complexities
(www.themarysue.com)
I would like it more nuanced like in Bioware games (ME, DA, SWTOR): some companions are bisexual, some are homo only, some are hetero only.
I don't mind some being straightforward and persistent but I would also like some being shy and not initiate romance if it isn't you who hit on them.
It would make for more "realistic" personalities, in my opinion.