I mean...it's a unique problem that I don't think many playing the game will actually suffer from since the polyamory aspect is pretty well marketed. If you don't want it, don't date in the first place and such.
I understand wanting the option of it (how could you??? poor rogue) but if you wanted to get back together afterwards it'd be even more awkward to write dialogue for that. I doubt the writing team wants to touch the whole potential break up thing at all.
a simple solution would be to just make rogue stop the scene saying she does not want to have sex anymore for the evening.
then the sex scene ends and it's not a big deal, you wouldn't feel like you want to tell her to gtfo.
no instead they make her get mad and furious and kick you out of the room and slam the door, like you're a dog.
it's a bit too much in my opinion.
just make her say "i don't want to continue, can you leave me alone tonight " then you leave, something like that and everything is fine. you come back the other day like nothing happened and doesn't feel like wanting to stop the relationship.
no need for additional developement and dialogs.
nevermind i was close to lvl2 relationship and now i lost all the trust points. i don't care there are other girls ingame haha. screw you rogue.