beta
I already know everyone hates the flashback but hear me out. This isn't really about him (Mincheol). I feel like since she mentioned how much Tae ha reminds her of him it's a really important point of reference for how she might react in the future when they really start getting into the romance.
The author can go any way they want so i could be wrong but since current mincheol isnt portrayed as redeemable I'll just say the flashback is not to get us to like him but to show that she was already charmed once by a guy who was at first thoughtful and caring and who distracted her from her horrible home life. Between her past with him and her current insecurities, any future hesitation (if there is any) makes more sense.
Also as impatient as I am I don't want it to be too rushed so I appreciate a glimpse into her past instead of it just being she should have left him long ago anyways, *screws new guy* and boom over