Given how many late chapter releases there were in season 1, it's probably going to be quite a while before season 2 starts. At least Song Theater can finally take a much-needed break.
Iruha saw Yoil suddenly becoming feminine on social media and probably thought she got a boyfriend (like the producer did). Since Sanghyun set his profile to do not disturb after she messaged him, Yoil is the only one who can confirm her fears that they started dating.