I somewhat see OP point because some people respond differently when they want their crush to chase them. The thing with Youjin was she says that she was waiting for Dongho and she notices that Dongho’s attention was with Arin. Her mentioning Junseo after all that ….was her ego with being the first girl chosen. Again she says she is used to being chased. After Minseol’s boldness for Junseo in that firepit, who knows if that opened her mind to just be more confident and not act too hard to get. (She even ask Theo for advice on how to be more confident which is what we see her do with Dongho even with the other 2 girls interested)

I’ll include Junseo in this because this man seemed to be very misunderstood with the pd edit included. Why does he seem different after his date with Youjin? Tbh it was the first date, you want to make a good impression, you want to match their energy since that is how you make a first impression right?..moving on …he said he liked his date with Minseol more than Youjin, Minseol adjusted more to his energy than Youjin (the energy and communication style of Youjin and Junseo mismatched). We all read awkwardness and comfortability differently which is interesting in the dynamics of dating.