Sex and Seduction in the Sixth World, I have no idea what's going on, total mayhem Options

[Mirilion]

So... I was browsing through the "On the Run" mission, and came across a section that mentioned seduction, where an attractive orc female might seduce the male guards, who were orks and trolls.

This got me thinking. Can only ork women seduce them? What about humans, dwarves or elves? I mean, it's relatively easy for a GM to decide if someone is gay, straight or bi, but what about racial and ethnic preferences? Do i just decide or is there a sort of most common preference mentioned somewhere? I can see how most humans would be put off by trolls, for example, but why would an ork be any different?

I guess social stigma kind of steers the different metatypes to marry or date only their own kind, but I'm not sure how much that would affect seduction attempts. Seriously, if an ork woman tried to seduce me she'd get at least a +2 modifier, or an automatic critical success if she's cosplaying as She-Hulk.

Right now the number of options is so huge that I might as well ignore the entire thing, or just randomly assign a dice pool modifier to an NPC seduction victim based on hunches.