Everyone react, with neutral affinity, and status pretty well. I think what is telling is the little bonus scene with Jill which is need to have chick affinity, and for a bonus scene with quinn you have to have dick affinity.
I think Jill will be pretty much the chick choice. but I actually would not mind if these characters are actually adapting to the MC , like Maya, I mean you can't be to much of a chick with her for one of her lewd scene, that is telling.
but we still don't know enough about the whole system, and we know some changes will happens, and we are still in early in the game, I know it's always a surprise. everyone plans their end game already, and who know may be Jill and Sage will leave the game, next year or something

.
I personally would not mind something like that. I would totally not mind if Sage is just a fuck buddy, and we never move past that , despite we may want it.
it's rare that you end up with your first love for the rest of your life, or even end up with the girl that you dated in college.