But it's not behind Sun Yools back and he knows that they are seeing each other, but they did not decide to officially date. More like they are sex partners and Sun Yool knows that, and he knows there is a possibility it will change, for better or worse. they cannot control how they feel. Jisuh doesn't feel comfortable enough to be in a relationship, and he properly explained to both of them, he probably likes Heejae and wants to be with him but he can't accept him like that yet so they are taking the relationship lightly for now. Sun Yool likes Jisuh and he is honest about it, although he probably realizes that Jisuh doesn't like him romantically (altho Jisuh does like him very much as a friend). Heejae and Jisuh indeed did clarify they like each other but the thing is that they are still not officially together, cause Jisuh probably still has a trauma from that stalker dude and doesn't want to date anyone (officially).
Not sure I like them going behind Sun-Yool's back, I mean yes I believe everyone has their own right to their privacy but at least clarify! Jisuh said he wasn't datin anyone but yet he's seeing Heejae (and yes I understand it's none of Sun Yool's business to know Jisuh's every relationship) practically behind Sun Yool's back. I don't see how this is going to end well. If Jisuh isn't wanting to date anyone based on how his "heart feels" then he should keep it simple and meet with both of them at Heejae's original apartment rather than Heejae and Jisuh meeting up at a "rendezvous" apartment that excludes the third party.
I guess to put it, I don't have mixed feelings because they are clearly clarified
（￣へ￣）