That's why jinwoo here says "if i hadn't remember(our first meeting) then our relationship would have changed" because if jinwoo doesn't remember their first meeting (which is he's just remembered when he came to the reunion event in ch 24) then when Colton talked in ch 38/39 about "I want to hear something from you" jinwoo will confess his true feelings( we also can see jinwoo knew about Colton's aim, he just avoiding the conversation because Colton also didn't proof anything, but after that he' said "what difference would make hearing?" to Colton). Btw Jinwoo already likes Colton for sure even before chapter 24 the proof : Jinwoo keeps drinking royal salute(look at chapter 20, it's the current timeline) which is Colton chose for him in chapter 41-42, it's flashback timeline) also look at when jinwoo's room so messy in ch 9 after contract meeting with Colton(look at the conversation too when jinwoo didn't like when Colton said he must be a pretend boyfriend for Colton) which is in ch 5 the room he's room was clean, so he broke the ceramics after that meeting. Conclusion : they already have mutual pining, but jinwoo still doesn't know the truth about Colton was over to Dylan, so he's afraid be a 2nd like his past(2)