Great idea ! And decent way to make it organic in the game ! (tho would need balancing or not depending how it's done like maybe this kind of "sex or love or relationship" gear could have a separated "weight" "encumberement" stat from the "working tools and gears" so that one doesnt ruin the other butif you go ovr the limit it still affect the character)
Tbh i was hoping too to have the freedom of choice like to romance the npcs or to watch them or whatever ! But properly so exemple if you choose to romance you can protect her from others and convince her to not cheat or something and then same for the opposite too.
(and to truly take care of your "employees" etc ... also i wonder if we can romance tish or tame her ?)
And i agree with your first statement real life sucks so why would you replicate it in a game ?
(hard time to find a partners or being forced to watch others etc ...)
Of course ntr lovers wouldn't care but that wasn't my point !
Plus tbh even if it's more work i always advocate for more content and freedom !
So that everyone can be happy and also everyone could quench their curiosity too by testing the other ways if they wanted to. But also make the game more "alive".