Jung-dae being so insistent that Han-eol go through with dating Hyeshin is quite annoying. Han-eol himself even said there wasn't much actual love there, so breaking up earlier/not going through with dating her in the first place wouldn't wreck her life. And really, she really needed to take Han-eol's own feelings into account here because he clearly states that things are different and he doesn't really care about what happens to Hyeshin. Hell, the fake dating is just going to create more issues when people see them hooking up to share notes on tailing their siblings, so why even invite that kind of time-wasting drama in the first place? Good on Han-eol to realize that they were just going to be wasting time endlessly arguing about it and striking a compromise, but damn, what a stupid argument to be having in the first place.