I agree with the 1st point,I was only able to get a feeling of connection with Erica,I think that talk in the hotel at night about wanting to go somewhere without neon lights and so on,was quite good.I think her path is nice,but yeah,the rest are as you've described them.I think that the fact that they don't seem bothered is pretty natural at this point, I mean we only have an option to do something with Erica and that classmate,forgot her name.They are the only ones who've met each other too. erica is not the type to be troubled by seeing mc with another woman,and to be honest they were just drinking when the other girl was there,the rest of the Li's just don't cross their paths with the others,and their relationship with the mc is still mostly business related. the 3rd point is what I think too,just have to wait and see