^^^^ I mean that basically what the hang out events are, at least some of them. Noelle's is pretty overtly romantic, and some of her lines about attracting people change depending on if you play as Lumine or Aether.
Big oof for me. Without the Spoiler tag, I would have thought it was just an AU or something. Oh well, at least now I'm more excited for the end and getting close to just reading the LN