People feel bad for Doyeon but I just don't because if you really look at her character since childhood she was never genuine,she has been acting nice all her life to get what she wants from people and thr other kids were genuine amd they all got adopted before her,Doyeon has always been calculative and manipulative and people like that exists,they had gone through hard or bad times in their lives and then they meets someone and even anyone and take their shit out on them by being crazy instead of dealing with their shit,Jinjoo is trying to fix her life at 40,Doyeon is 24 she has more time to date and make bad dating choices and still be young enough to make those bad choices but Jinjoo can't afford to do that because she's aging.
Jinjoo is right not to take a chance on Doyeon who acts out the way she does,how can Jinjoo trust in that type of relationship to last with a person who acts like Doyeon does,it's like Jinjoo thought that being with Doyeon might have worked but to see how crazy Doyeon really is is why Jinjoo is pulling away.
Jinjoo says what she knows Doyeon wants to hear during sex but for me the things Jinjoo says in her mind and toward Doyeon is her actual true and honest feelings but Doyeon never listens to her so she says what ever Doyeon wants to hear,sure she might love Doyeon but Jinjoo knows that love doesn't make a good relationship or a lasting one.Doyeon needs to leave that woman alone and Jinjoo needs to divorce and go back and try to mend fences with her parents again and start her life over with a fresh start and finally do what makes Jinjoo happy.make her own choices.

Doyeon is an asshole,I said it hundreds of times,now do y'all believe me.