Lisa's... pretty sure that, if she tells him "No I actually have to fake breaking up with you," they wouldn't have changed anything, because it's much more painful(?) to know you love and are loved by someone and yet CANNOT be with them versus 'we have cleanly broken off, he should go find something better to do, let's move on'. But like, she's kind of a binchcake about it. She regresses to her "Because I'm Angelisa/Cheonsalisa!" attitude.
Dowon even says he would wait for Lisa if she just told him that what she was saying, basically 'Dowon I played u lol I'm already into this other guy because of a baseless internet rumor due to them locking eyes ONCE in like an awards ceremony- btw its red haired dude and you're just not good enough for me, you commoner,' was just a lie (it was) Dowon seemed pretty confident at first because he "knows she loves him" based off her reactions or whatever lol. But she has to seriously be savage to actually break things off.
Anyway the drugger dude is just a douche. It's.. I don't know, he's crazy, he shows up naked to Lisa's house and Dowon sees him going in (assuming he's the guy she's cheating on him with) and starts crying lmao. He sort of seems to harbor animosity with Lisa though. And yes, Lisa loves Dowon. She even almost kisses the douchebag because she's blackout drunk/high and starts hallucinating Dowon and he [douche] just goes "Nope ^u^"
Based off the comment section, people think Dowon's too far gone because he's doing "spon"(-sorship) and now he's forgotten Lisa pretty much. People are saying ML is really red haired boy?