@Teones i mean, Noona coming back doesn't mean she's getting in the way of YW and Hae-in's relationship. She didn't even bothered YW after he rejected her or do something bad that can harm their relationship. And her comeback has nothing to do with YW in the first place. She didn't even want to bother them it's just that the director who's handling LA saw Noona as the perfect lead for LA's MV.
I don't care about your taste!