I was also thinking about what RagnarokCzD said.
And it made me think the best solution would be (just like in real life), if the Origin, and NPC characters would actually have preferences, and would only offer you the dialog (or accept your propsal) if you meet their preferences.
This would also add the immersion that you can't just get anyone you'd like. Just like in real life.
I really find it stupid, that all of the Origin characters are interested in both genders...
Most people are not, and even if I respect those who are, I personally feel this being forced on me.