Responses
i think it was strongly implied they had a more complicated relationship than that in all the flashbacks. we saw them kiss once and saw jaeyoung behaving with him similarly to how he behaves with seungmin during their trainee days. although i don't know if they were straight dating i just used ex-bf as a descriptor?

so do we think the ex bf was in on the whole thing then before he even met jaeyoung? i wonder if he's gonna turn out to be like a straight sociopath