I may have accidentally cheated on my girlfriend

Last I checked I was only dating one person but I just discovered Chihiro somehow managed to manifest herself into being my girlfriend. I think I just wasn’t paying attention during the cutscene and didn’t notice I was dating her. I’ve tried rewinding as far as I could but she’s still listed as my partner. Im aware there’s no punishment in this game but I still feel irrationally guilty so if there’s any way to get around this it would be appreciated.