Wow, when literally every. single. one. of your exes are complete dogshit. But for some reason you keep them around and go back to them?
Wut.
1) Promises to be together always, wait for each other etc etc. Gives up, gets with black dude she doesn't really care for and knows he cheats on her left right and centre. For some reason she needed to be with the guy in order to move back to her hometown to find the MC?? What? Okay, but she arrives then just has to stay with him because? - The best part is she says she had only been with him a couple of months by this point, but she couldn't just wait those 1-2 months and move by herself because..?
Decides that instead of breaking up with him and just saying "No, there is no-one else I just don't want to be together anymore." Figures the best path forward is to stay with him, but cheat on him with the MC.
Gets given an ultimatum "Him or me, either break up with him or we're done." - Naturally, because she's so in love with the MC and doesn't want to be with her boyfriend she decides to marry the cheating boyfriend who she doesn't want to be with.
2) Text saying terrible thing has happened followed by ghosting him for years, until she's ready to not ghost, then shows up at college introducing herself as his girlfriend. Doesn't follow through with it, goes back to ghosting.
3) Together for years, so happy and in love that they just unilaterally decide to leave the country without telling MC anything other than "I need to go." To be fair she did text him sporadically until she just couldn't anymore, because she was so busy with work that she had zero time to send a message. Absolutely none, didn't have any time where she had to wait - like on the train, or in a car, or waiting for internet girl to do something, or right before sleeping, or waiting for her dinner to cook, or literally any time ever. She even had to miss a meal every now and then she was so busy!
Shows back up after a year of no contact expecting everything to be fine. Now she can tell the MC the real reason: Her dad told her to come home. Her big scary father that no home defense weapon could ever bring down. Her big scary influential father who is a big deal in... Korea? That's a little ways away though..
She couldn't bring it up that she was being pressured? Make a decision together with your partner of x years? She couldn't get a fucking gun and some training?
------------------------
The MC meanwhile, is happy as larry, aside from the few sentences worth of moments where he's angry in an angsty pre-teen kinda way. It's either completely happy let's go have fun yay or woe-is-me the world is painting my toenails black - never a "This specific thing is bullshit and I find your actions disgusting and hurtful" kinda way.
God damn there's some garbage love interests in here, #1 takes the cake though, Holy. Fuck. on that one. Seriously -7/10 wouldn't use my own penis to pee on her never mind stick it in her.