I don't think so because I remember they made a joke about sookhee going to a not so good college unlike Jung. Also jung, rena, kang and the GM went to the same college (I think sookhee would remember going to the same college as kang lol I just get that feeling).
Jung and rena were dating in college too when all their drama started. BUT I could be wrong i don't feel like re-reading haha~