I re-read it twice, but I'm quite sure Eungi suspects and knows that Jeongwoo was the same boy from the bus stop, but not sure if Jeongwoo does. He did say his memories of the guy was pretty hazy and he only remembers the guy worked at the cafe, although he's shown to have familiar "dejavu" vibes with Eungi. I'd personally like to think he finds out eventually.
Also, yes, it's pretty interesting to see how the girl knows. There were a lot of hints for her such as Eungi only vaguely replying to her attempts to spend time with him with no interests. That also, her observations on how Eungi treats Jeongwoo (even Eungi's close friends explain how Eungi has changed personality wise recently) and how Jeongwoo is very reluctant to share his sunbae's time with her knowing she (his friend) likes him gives even more of a hint. She's seen how Eungi and Jeongwoo spend so much time alone and that they want to be alone. She doesn't seem dumb. She can certainly pierce the clues together. But, she's a nice friend. She sees that someone she's interested in doesn't reciprocate her interests, so she starts to back off slowly, and eventually. She sees they're happy. She doesn't confront him because Jeongwoo says to her something like there's a lot going on for him, but he can't tell her yet at the moment. She backs off on questioning him then. I believe it's somewhere around after the festival event with the fight happened.
Honestly, what I wanted to actually know is if their respective family members and friends know about their relationship (other than Jeongwoo's sister). It's nice that they stay together in that time-skip, but Korean BL manhwas usually never mention the families in the epilogue. T.T Maybe it's because there's still some stigma about openly being something other than straight. ╮(￣▽￣)╭
Idk, but I definitely agree this is one of the best BL webtoons I've ever read too.
True, there were hints, but I would have liked to see the point when it all clicked for her, ya know? Like she hears something or sees them doing something together, then all of a sudden she gets this look on her face, and that's when you're like - Yup. She knows.
Looking it over again, it seems like she figured it out when he got there with the jacket tied around his waist and needed to reapply his lipstick.
Honestly, this is the best shounen ai webtoon I've ever read. Possibly even the best shounen ai I've ever read. There's good relationship development, and there's enough drama to be interesting without being eye-roll worthy.
My biggest issues are that it's never explained when/how they found out that they were the same people from four years prior, and that it's never explained how the girl found out they were dating. I thought it was cool that they decided to show and not tell with her, but the way they went about it was poor. We saw that she knew instead of her outright saying she knew, but we never find out how she learned this. Observing them? Seeing two guys together, one you know having only been with girls in the past and having been very in love with one woman, and eventually coming to the conclusion that they're a couple is quite a jump. Not to mention she'd been jealous of her friend hanging with Eungi before, but she shows no signs of being upset when she finds out they're a couple.
Then, this is a translator thing rather than the main story, but I hate that the translater did "English versions" of their names. They're Korean. I don't want to read English versions of their names, not to mention that it breaks the atmosphere, plus we're over half-way through the story and it suddenly changes out of nowhere.