Just to add to my comment, I’m starting to realize the premise and plot of this manhwa was great on paper, but it had such a bad execution. The whole plot with the phone and the blonde guy was incredibly interesting, but the author clearly couldn’t balance the aspect of romance and that part of the plot. I was actually more interested reading the chapters of her meeting the man again than seeing her with Eunhyuk.
For the romance aspect, I’m not seeing any sort of chemistry between Eunhyuk and Su Ae. Dohwa and Su Ae always feel so organic when they’re together, which is honestly a terrible thing if the author was trying to make Eunhyuk the ML. Eunhyuk is, in theory, brought up to be this complex, interesting character we’re supposed to sympathize and root for to be with Su Ae, but he doesn’t have any likeable aspects aside from his looks. It doesn’t help that Dohwa has a charming, playful personality that contrasts from Eunhyuk’s plain one on top of his good looks. Personally speaking, if I was Su Ae, I’d pick Dohwa simply off personality alone. Dohwa is fun, charming, and has a great sense of respect for her. When he confessed his feelings to her, he didn’t expect her to reply or accept him at all. I think that’s worth a lot more than a highschool boyfriend that left you for a decade or so without a word.
I’ll keep on reading since I’m interested on seeing what the author is trying to do with the rest of this story, but I can’t help but to be disappointed on what this story could’ve been if we would’ve had more fleshed out characters.

I feel like I just got whiplash from this chapter. Where did this come from? Where was the buildup for this kiss to happen? I had to double check and see if I hadn’t skipped any chapters because this just came out of nowhere.
I’m starting to think that the author probably didn’t expect this much dislike over Eunhyuk, and they’re trying to establish him as ML over Dohwa without having any sort of direction when it comes to writing the relationship between Su Ae and Eunhyuk. This just feels so forced. What is this kiss supposed to accomplish? To show the audience that they’re possibly endgame? Because it was the most uncomfortable, unnecessary, and confusing kiss scene I’ve ever seen in a manhwa. Y’all, I don’t know what to say. I’m just confused.