Sorry but the sex 5 years ago wasn't amazing, it was ok for Jay but horrible and hurtfull for Yoohan.
And when Jay started to help Yoohan didn't remember him yet,
the sex they had 5 years ago was painful, yoohan used sex as a form of self harm after losing his family. yoohan never said he’s not gay lol, he just said he doesn’t bottom and the exception was the one guy from 5 years ago (who he doesn’t know is happy at the time). and jay didn’t know who he was until chapter 37, jay started sponsoring yoohan before he finds out because he just ended up becoming interested by him
after 80 chapter im surprise i still remember that all of this started bcs they had an amazing sex 5 years ago while both are in a turning point on their life, but when they meet again taemin said something along these lines: "i'M nOt gAy" so jay, who remembers and has been searching for his ass said: "aight. bet"
like, this is the whole reason jay sponsored taemin. well, besides their align interest for taking down common enemies, ofc. will be waiting patiently for season 3. shy taemin and cuddly, domestic coded jay in the next stage of their relationship will be such an interesting sight to see.