I don't think that you will have any swinging in the love route, but If you don't like some of the girls I could see the dev adding a choice for you to break up with them and then they go have fun with other boys.
Swinging doesn't mean just exchanging partners. It have variety of definitions. Sometimes. Swinging also means multiple couples having sex in same room without exchanging but girls kissing each other after the sex with their respective partner's cum on their lips. What do you call that situation? It also mean some sort of "exchanging" sexual activity right? Why I'm telling this? Because there are high chances that this scene will happen by the "players choice" in future (or might not be, if devs changed their "perception" towards so called "love" route.)
Yes, I agree players should have a choice to break up if they are not interested with that girl. and yes, those girls have right to go for other boys. But, why players have to see those girl's scenes with other boys if players are not at all interested with those girls in the first place? So, you mean to say, even If I don't like aurora, but just because i'm not into watching girl's "sex scenes" with other boys, i'm forced to choose her? How that is called as "love"?
There are tons of other vanilla/love/harem games where we can choose our girls, without having worry about those rejected girls's sex scenes with other boys. Those girls won't appear in game or even if they appear, they appear for the "story reasons" but without sex scenes.